diff --git a/packages/plugin-ext/src/plugin/type-converters.spec.ts b/packages/plugin-ext/src/plugin/type-converters.spec.ts
index 996cb71926f3f..f286831244000 100644
--- a/packages/plugin-ext/src/plugin/type-converters.spec.ts
+++ b/packages/plugin-ext/src/plugin/type-converters.spec.ts
@@ -169,7 +169,8 @@ describe('Type converters:', () => {
     });
 
     describe('convert tasks:', () => {
-        const type = 'shell';
+        const customType = 'custom';
+        const shellType = 'shell';
         const label = 'yarn build';
         const source = 'source';
         const command = 'yarn';
@@ -178,7 +179,7 @@ describe('Type converters:', () => {
         const additionalProperty = 'some property';
 
         const shellTaskDto: ProcessTaskDto = {
-            type,
+            type: shellType,
             label,
             source,
             scope: undefined,
@@ -193,7 +194,7 @@ describe('Type converters:', () => {
             name: label,
             source,
             definition: {
-                type,
+                type: shellType,
                 additionalProperty
             },
             execution: {
@@ -206,7 +207,7 @@ describe('Type converters:', () => {
         };
 
         const taskDtoWithCommandLine: ProcessTaskDto = {
-            type,
+            type: shellType,
             label,
             source,
             scope: undefined,
@@ -220,7 +221,7 @@ describe('Type converters:', () => {
             name: label,
             source,
             definition: {
-                type
+                type: shellType
             },
             execution: {
                 commandLine: 'yarn run build',
@@ -230,6 +231,34 @@ describe('Type converters:', () => {
             }
         };
 
+        const customTaskDto: ProcessTaskDto = {
+            type: customType,
+            label,
+            source,
+            scope: undefined,
+            command,
+            args,
+            cwd,
+            options: {},
+            additionalProperty
+        };
+
+        const customPluginTask: theia.Task = {
+            name: label,
+            source,
+            definition: {
+                type: customType,
+                additionalProperty
+            },
+            execution: {
+                command,
+                args,
+                options: {
+                    cwd
+                }
+            }
+        };
+
         it('should convert to task dto', () => {
             // when
             const result: TaskDto | undefined = Converter.fromTask(shellPluginTask);
@@ -256,6 +285,24 @@ describe('Type converters:', () => {
             assert.notEqual(result, undefined);
             assert.deepEqual(result, taskDtoWithCommandLine);
         });
+
+        it('should convert task with custom type to dto', () => {
+            // when
+            const result: TaskDto | undefined = Converter.fromTask(customPluginTask);
+
+            // then
+            assert.notEqual(result, undefined);
+            assert.deepEqual(result, customTaskDto);
+        });
+
+        it('should convert task with custom type from dto', () => {
+            // when
+            const result: theia.Task = Converter.toTask(customTaskDto);
+
+            // then
+            assert.notEqual(result, undefined);
+            assert.deepEqual(result, customPluginTask);
+        });
     });
 
     describe('Webview Panel Show Options:', () => {
diff --git a/packages/plugin-ext/src/plugin/type-converters.ts b/packages/plugin-ext/src/plugin/type-converters.ts
index 8219cc0778132..0c2ecac21f765 100644
--- a/packages/plugin-ext/src/plugin/type-converters.ts
+++ b/packages/plugin-ext/src/plugin/type-converters.ts
@@ -651,7 +651,8 @@ export function toTask(taskDto: TaskDto): theia.Task {
         result.execution = getProcessExecution(taskDto as ProcessTaskDto);
     }
 
-    if (taskType === 'shell') {
+    const execution = { command, args, options };
+    if (taskType === 'shell' || types.ShellExecution.is(execution)) {
         result.execution = getShellExecution(taskDto as ProcessTaskDto);
     }
 
diff --git a/packages/task/src/browser/quick-open-task.ts b/packages/task/src/browser/quick-open-task.ts
index 330481da74c55..428cd968aba1d 100644
--- a/packages/task/src/browser/quick-open-task.ts
+++ b/packages/task/src/browser/quick-open-task.ts
@@ -62,9 +62,9 @@ export class QuickOpenTask implements QuickOpenModel, QuickOpenHandler {
     async init(): Promise<void> {
         const recentTasks = this.taskService.recentTasks;
         const configuredTasks = this.taskService.getConfiguredTasks();
-        const providedTasks = await this.taskService.getProvidedTasks();
+        const detectedTasks = await this.taskService.getProvidedTasks();
 
-        const { filteredRecentTasks, filteredConfiguredTasks, filteredProvidedTasks } = this.getFilteredTasks(recentTasks, configuredTasks, providedTasks);
+        const { filteredRecentTasks, filteredConfiguredTasks, filteredDetectedTasks } = this.getFilteredTasks(recentTasks, configuredTasks, detectedTasks);
         const stat = this.workspaceService.workspace;
         const isMulti = stat ? !stat.isDirectory : false;
         this.items = [];
@@ -83,7 +83,7 @@ export class QuickOpenTask implements QuickOpenModel, QuickOpenHandler {
                             : index === 0 ? true : false
                     )
                 })),
-            ...filteredProvidedTasks.map((task, index) =>
+            ...filteredDetectedTasks.map((task, index) =>
                 new TaskRunQuickOpenItem(task, this.taskService, isMulti, {
                     groupLabel: index === 0 ? 'detected tasks' : undefined,
                     showBorder: (
@@ -186,36 +186,44 @@ export class QuickOpenTask implements QuickOpenModel, QuickOpenHandler {
         return `Task id: ${task.taskId}, label: ${task.config.label}`;
     }
 
-    private getFilteredTasks(recentTasks: TaskConfiguration[], configuredTasks: TaskConfiguration[], providedTasks: TaskConfiguration[])
-        : { filteredRecentTasks: TaskConfiguration[], filteredConfiguredTasks: TaskConfiguration[], filteredProvidedTasks: TaskConfiguration[] } {
+    private getFilteredTasks(recentTasks: TaskConfiguration[], configuredTasks: TaskConfiguration[], detectedTasks: TaskConfiguration[])
+        : { filteredRecentTasks: TaskConfiguration[], filteredConfiguredTasks: TaskConfiguration[], filteredDetectedTasks: TaskConfiguration[] } {
 
         const filteredRecentTasks: TaskConfiguration[] = [];
-        recentTasks.forEach(recent => {
-            const exist = [...configuredTasks, ...providedTasks].some(t => TaskConfiguration.equals(recent, t));
-            if (exist) {
-                filteredRecentTasks.push(recent);
+        for (const recent of recentTasks) {
+            const taskConfig = this.findConfig(recent.label, configuredTasks) || this.findConfig(recent.label, detectedTasks);
+            if (!taskConfig) {
+                continue;
             }
-        });
 
-        const filteredProvidedTasks: TaskConfiguration[] = [];
-        providedTasks.forEach(provided => {
-            const exist = [...filteredRecentTasks, ...configuredTasks].some(t => TaskConfiguration.equals(provided, t));
+            const exist = filteredRecentTasks.some(task => TaskConfiguration.equals(task, taskConfig));
             if (!exist) {
-                filteredProvidedTasks.push(provided);
+                filteredRecentTasks.push(taskConfig);
             }
-        });
+        }
 
         const filteredConfiguredTasks: TaskConfiguration[] = [];
         configuredTasks.forEach(configured => {
-            const exist = filteredRecentTasks.some(t => TaskConfiguration.equals(configured, t));
+            const exist = filteredRecentTasks.some(recent => TaskConfiguration.equals(configured, recent));
             if (!exist) {
                 filteredConfiguredTasks.push(configured);
             }
         });
 
-        return {
-            filteredRecentTasks, filteredConfiguredTasks, filteredProvidedTasks
-        };
+        const filteredDetectedTasks: TaskConfiguration[] = [];
+        detectedTasks.forEach(detected => {
+            const exist = filteredRecentTasks.some(recent => TaskConfiguration.equals(detected, recent)) ||
+                configuredTasks.some(configured => configured.label === detected.label);
+            if (!exist) {
+                filteredDetectedTasks.push(detected);
+            }
+        });
+
+        return { filteredRecentTasks, filteredConfiguredTasks, filteredDetectedTasks };
+    }
+
+    private findConfig(label: string, configs: TaskConfiguration[]): TaskConfiguration | undefined {
+        return configs.find(task => label === task.label);
     }
 }
 
diff --git a/packages/task/src/browser/task-configurations.ts b/packages/task/src/browser/task-configurations.ts
index 43e097cda2627..d57080c431dbb 100644
--- a/packages/task/src/browser/task-configurations.ts
+++ b/packages/task/src/browser/task-configurations.ts
@@ -234,7 +234,7 @@ export class TaskConfigurations implements Disposable {
                         console.error(`Error parsing ${uri}: error: ${e.error}, length:  ${e.length}, offset:  ${e.offset}`);
                     }
                 } else {
-                    return this.filterDuplicates(tasks['tasks']).map(t => Object.assign(t, { _source: t.source || this.getSourceFolderFromConfigUri(uri) }));
+                    return this.filterDuplicates(tasks['tasks']).map(t => Object.assign(t, { _source: this.getSourceFolderFromConfigUri(uri) }));
                 }
             } catch (err) {
                 console.error(`Error(s) reading config file: ${uri}`);
@@ -267,7 +267,7 @@ export class TaskConfigurations implements Disposable {
             await this.fileSystem.createFile(configFileUri);
         }
 
-        const { _source, $ident, ...preparedTask } = task;
+        const { source, _source, _scope, $ident, ...preparedTask } = task;
         try {
             const response = await this.fileSystem.resolveContent(configFileUri);
             const content = response.content;