I’m practically not using tags because of this blocking behaviour. Up, down (in typical circumstances) and right (in described situation) arrow keys are useless because of this tag popup, and esc - the button you can use anywhere else to loose focus, is deactivated here too. I wish there is an option to disable this popup completely, if you consider this blocking as a “feature” and not a bug, @Erica
Add those two items to a list and you will see this bug in the first line:
lorem ipsum #cache
lorem ipsum #cached