diff --git a/client/src/components/Tags/model.test.js b/client/src/components/Tags/model.test.js
index ce421e7c0c50..c70736920aeb 100644
--- a/client/src/components/Tags/model.test.js
+++ b/client/src/components/Tags/model.test.js
@@ -64,13 +64,35 @@ describe("Tags/model.js", () => {
 
     describe("Tag matching regular expression tests", () => {
         it("Should allow valid tags", () => {
-            const validTags = ["tag1", "tag.subtag", "tag.subtag.subtag", "tag.subtag:value", "🌌", "name:🌌", "🌌.🌌"];
+            const validTags = [
+                "tag1",
+                "tag.subtag",
+                "tag.subtag.subtag",
+                "tag.subtag:value",
+                "🌌",
+                "name:🌌",
+                "🌌.🌌",
+                "name:value..separated",
+            ];
             for (const tag of validTags) {
                 expect(VALID_TAG_RE.test(tag)).toBeTruthy();
             }
         });
         it("Should not allow invalid tags", () => {
-            const invalidTags = ["", " ", ".", "..", "...", ":", ":value", "tag:", "tag.", ".tag"];
+            const invalidTags = [
+                "",
+                " ",
+                ".",
+                "..",
+                "...",
+                ":",
+                ":value",
+                "tag:",
+                "tag.",
+                ".tag",
+                "tag..subtag:value",
+                "tag:no spaces in value",
+            ];
             for (const tag of invalidTags) {
                 expect(VALID_TAG_RE.test(tag)).toBeFalsy();
             }
diff --git a/client/src/components/TagsMultiselect/StatelessTags.vue b/client/src/components/TagsMultiselect/StatelessTags.vue
index dfc30060dbb9..7f2256a4aaa3 100644
--- a/client/src/components/TagsMultiselect/StatelessTags.vue
+++ b/client/src/components/TagsMultiselect/StatelessTags.vue
@@ -7,6 +7,8 @@ import { useToast } from "@/composables/toast";
 import { useUid } from "@/composables/utils/uid";
 import { useUserTagsStore } from "@/stores/userTagsStore";
 
+import { VALID_TAG_RE } from "../Tags/model";
+
 import HeadlessMultiselect from "./HeadlessMultiselect.vue";
 import Tag from "./Tag.vue";
 
@@ -84,10 +86,8 @@ const slicedTags = computed(() => {
     }
 });
 
-const invalidTagRegex = /([.:\s][.:\s])|(^[.:])|([.:]$)|(^[\s]*$)/;
-
 function isValid(tag: string) {
-    return !tag.match(invalidTagRegex);
+    return tag.match(VALID_TAG_RE);
 }
 
 function onTagClicked(tag: string) {