Editor completely screwed when internet connection goes down

What you see on the image is what happens to the editor when my internet connection goes down and I use the mouse wheel. This happened twice in two days, each time I was working on tilemaps using the tile palette.

Yesterday, Unity “recovered” when the connection went back; today, it didn’t and I had to close it.

Not sure what I must think of this…

Never happened again, at least recently.