Aivar Annamaa

Thanks for the suggestion. I'll consider adding this in a future release.

Assuming the issue is fixed in 4.0.1

The fix will be in the upcoming 4.0.2.

I restored the old attributes of the Find/Replace dialog.

Please reopen if you experience this again and have more information to add.

In the upcoming version 4.0.2 Thonny won't remove the links anymore.

I'm considering moving from Tkinter to wxPython. Therefore I'm postponing this topic for now.

The option for requiring saved files is now added.

@datamafia and others -- I can recommend another approach that many people use for MicroPython. Let's say you prefer PyCharm for Python editing. In this case you could define [mpremote](https://docs.micropython.org/en/latest/reference/mpremote.html)...

If it happens again, then please send me the backend.log (Tools => Open Thonny data folder), before starting the backend again.