Tabs switching on their own

[ndeville]

Description

I have a new issue with CotEditor (which I use daily and a lot), which disrupts my workflows: when opening a new tab when a tab is already opened, CotEditor starts to switch from one tab to the other, in a loop (accelerating it seems) until I close a tab.

See this video:

https://www.dropbox.com/scl/fi/h8eoq2ltl4fm66zvqk6rb/260107-131118.mp4?rlkey=mstll66agzh43xvb3tg0lvflx&dl=0

The tab switching happens on its own and prevents working on a file.

To Reproduce

Opening a new tab - though it doesn't do it for every tab, and I fail to identify the common pattern.

Expected behavior

No response

CotEditor version

6.2.1 (787)

macOS version

macOS Version 15.6 (Build 24G84)

Additional context

No response

[1024jp]

@ndeville The last version for macOS 15 is 15.7.3, not 15.6.
Please update it to the latest one and confirm the issue still persists.

[ndeville]

@ndeville The last version for macOS 15 is 15.7.3, not 15.6. Please update it to the latest one and confirm the issue still persists.

Sorry for the dumb question: how do I update Cot?
I see I downloaded it from the App Store and it is on the latest version there.
Or do I need to re-install it differently?

[1024jp]

@ndeville @ndeville My apologies, I meant the version of your macOS. The macOS should be the latest version in the major version, as the issue could be related to the system-side.