Bug with undo command, when executed the second time the node jumps down in the lower left corner. This action is not undoable. It happens when using cmd+z and from menu command.
This is a known issue and solved in the current beta release.
any updates on that? it’s doing it everytime, and i don’t know how »secure« it is to work with the cutting edge version of glyphs. (since it is not really recommended by you, guys)
I will issue an update soon. It is in final stage of testing.
really looking forward. sorry for sounding impatient 
You can try it yourself by checking Preferences > Updates > Show cutting edge versions.
yes, but you recommend to work on copies of the files then (which might be a good idea then). anyway this is unfortunately not too helpful in a serious workflow.
It just means that you should be more carful with backups.