Selecting sketch file with double-click results in duplicate tabs

[per1234]

Describe the bug

Arduino sketches may consist of multiple files, which are shown in the Arduino IDE as tabs. The "Search" and "Sketchbook" side bar panels allow the selection of the active tab by clicking on its sketch file.

When this selection is done under the following conditions:

• The tab has not been selected since the sketch was opened
• The selection is done via a double-click rather than a single click

🐛 Instead of selecting the tab as expected, a duplicate tab is opened.

To Reproduce

1. Open a multiple file sketch in the Arduino IDE.
   The following sketch is provided for the demonstration: MultipleFiles.zip
2. Open the "Search" side bar panel by clicking the magnifying glass icon.
3. Search for the text hello
   There will be a search result in each of the files of the demo sketch.
4. Double click on a search from either of the tabs other than the one that is currently selected in the editor.
   For example, if the "SomeTab2.ino" tab is selected, then double-click the search result in the "MultipleFiles.ino" or "SomeTab2.ino" tabs.

🐛 There are now two tabs for the file associated with the search result you clicked:

Expected behavior

Clicking a file of a currently open sketch in a sidebar panel always selects its tab.

Each sketch file only ever gets a single tab in the editor.

Desktop

Original report

• OS: Windows 10
• Version: 2.0.0-rc1-snapshot.f0d9894
  Date: 2021-11-30T16:25:41.414Z
  CLI Version: 0.20.1 [abb21449]

Last checked with

• OS: Windows 10
• Version: 2.0.0-rc3-snapshot-2f9bf86
  Date: 2022-02-11T14:52:06.341Z
  CLI Version: 0.21.0 [10107d24]

Additional context

🐛 The equivalent procedure will also produce duplicate tabs when using the "Sketchbook" side bar panel.

[per1234]

Bug is still not fixed so this must remain open.

[heliophagus]

On IDE 2.0.3, I ALWAYS get multiple tabs whenever I open ANY .INO files. Changes made in one tab are reflected in the other tab, so it isn't a huge issue, but it IS annoying.