After updating to the latest version of GDevelop (5.0.134), Yarn does not save anything, I’ve tried to use “Save as” and nothing, tried clicking on apply and still nothing.
(I have restarted and reinstalled GDevelop, still nothing)
You can see it in the video below
I can now reproduce this in 5.0.134. I’ll get this reported over in Github.
Edit:
Reported here: Within 5.0.134 Can no longer click Save/Apply buttons in the Yarn editor · Issue #3952 · 4ian/GDevelop · GitHub
I had the same issue. I can’t work on my game until it’s resolved.
the same happens to me 
I’m using a separate software called YarnEditor for now. It seems to be working fine but I’ve not tested it completely. If you really need to work on your project right now you might want to give it a try, though make a backup of the files before changing anything since the last release was some time ago and it might be incompatible with some stuff now.
Thanks a lot !!!
5.0.135 fix the Yarn editor, you can enable the auto updater or download it on the website.