Some sketches open as expected, but one always opens with two identical tabs. I cannot close the second tab. If I select "Delete" from the tab-drop-down, it asks if I want to delete the current sketch. If I select "OK" nothing happens. [Screenshot 2021-12-22 210329]

What files are in the folder containing the problem sketch ?

If you click on the Explorer icon in the sidebar you will see each of the split windows like this [image] If you hover over one of the filenames the display will change [image] Clicking on the X alongside the filename allows you to close that editor pane

The difficulty of closing split editor panels is being tracked by the Arduino IDE developers here: Unable to close split tabs opened 08:52PM - 14 Oct 21 UTC closed 10:21AM - 05 Apr 22 UTC …

[image] ptillisch: the Explorer is not in the sidebar by default. Thanks, but I don't remember taking any actions to make the Explorer icon visible. I have just deleted all previous versions of 2.00 from my PC and downloaded the latest nightly build and the Explorer is in the side bar with n…

[image] UKHeliBob: I don't remember taking any actions to make the Explorer icon visible. It is certainly not normal to have Explorer. It is not on the sidebar by default: Explorer Button is not visible by default opened 09:54AM - 16…

Thanks for the details I have am using Windows and have deleted both of the folders you suggested. Running Arduino IDE.exe from the download of the latest nightly build opens the editor with no Explorer icon present, so that explains where it was being triggered from Also as you suggested, right …

I never really checked for duplicate tabs but just noticed it happening. I selected a sketch using "File/Open Recent" from an already opened sketch. The selected sketch opened showing a duplicate tab displaying the full file path. [image] The only file in the sketch folder was the opened .ino s…

[image] Willem43: The selected sketch opened showing a duplicate tab displaying the full file path. While the split editor @StephenJD encountered is an intentional feature, the duplicate tabs you encountered is a bug that is being tracked by the developers here: https://github.com/arduino/a…

I spoke too soon. If I select right hand click on a function (in the same .ino file) the editor jumps to the function definition, which is a great feature, but at the same time opens a new tab, it also switches to the new tab when displaying the function definition. This would be correct if the def…

Sketch opens with two identical tabs. Cannot close the second

Development Tools IDE 2.x

StephenJD December 23, 2021, 10:42am 3

I have discovered that this is a split-view (F1->View: Split Editor). But I cannot see a way of un-splitting the view!

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Sketch opens with two identical tabs. Cannot close the second

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