Aseprite v1.2.20

Since either this update or the previous one, every time I open Aseprite and then open a document to work on, the layer area is resized to minimum width:
After I resize it to a usable width, it stays for the rest of the session even if I work on other documents, but returns to minimum width if I close Aseprite and reopen it later.

I’m guessing this is the same issue as 1.2.20 issues with timeline/onion skinning - #2 by KashouC