Hello,
after disable the mod upgrade module https://mods.factorio.com/mods/aaaaaaaa ... adeModules, I still have it GUI on top left (without the icone) :
my save game.
[Rseding91] [0.15.21] After removing a mod with GUI, one block stay
Re: [Rseding91] [0.15.21] After removing a mod with GUI, one block stay
Thanks for the report. This is now fixed for the next version of 0.15. Existing GUI elements will continue to have this problem but any GUI elements created after the next version of 0.15 will correctly remove when the associated mod is removed/disabled.
If you want to get ahold of me I'm almost always on Discord.