I can't confirm this. Admittedly I don't have Windows, so maybe that's the problem here (I don't have a whole day to spend installing it...), but I do have a Lubuntu EFI install, which means I have a FAT32 partition with boot and esp flags mounted to /boot/efi and another partition. I deleted the second partition to make room for the install, unchecked the boot flag, and moved on and there was no repeat of anything.
** Changed in: calamares (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1801442 Title: Redundant boot-flag-clearing lines in overview window To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calamares/+bug/1801442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs