Then keycode & keysym correspond to different characters (or whatever) and whether or not you get the desired outcome depends on the implementation of the software capturing it at any given time.

Took me a while to work out that the reason my pasted passwords would occasionally not work was the remapping of a couple of symbol keys. (I'm accustomed to a weird mashup of USA/UK layout, thanks mainly to Apple's non-standard 'UK' layout donating Americani?ms, but then useless prominent keys I swapped for something more helpful (backtick & pipe I think, off the top of my head, for things so useless that I literally never use them and don't know their names.))