Problem with undo if i have any guides

if i have any guides then cmd+z works only on them, not on contours (and also ‘undo’ is inactive in the ‘edit menu’).
if i haven’t any guides, then everything works fine

i have 2.6.2 ver


Global guides? These belong to the master, not the glyph. Otherwise, glyphs have their own undo history.

yep, global guides

That explains it. They go into different undo histories.