I have just gone through the gamut that Andreas posted, Mac OS Mojave. existing game, bar already enabled, macros in the collections tab - PASS existing game, bar not already enabled, macros in the collections tab - FAIL existing game, bar not already enabled, no macros in the collections tab - FAIL new game, bar already enabled, macros in the collections tab - PASS new game, bar not already enabled, macros in the collections tab - FAIL new game, bar not already enabled, no macros in the collections tab - FAIL Tests were conducted in FF and Chrome. In all cases, I found that once I activated the "Show macro quick bar?" setting, I was able to drag actions from the character sheet to the quick bar only if the setting was on, regardless of the presence of other macros in the collections tab or already on the bar. This would seem to be the expected behavior. Note that if I turned on "Show in macro bar" for an Action on a character sheet, it automatically made the bar visible and showed the Action in the bar: existing game, bar already enabled, macros in the collections tab - PASS existing game, bar not already enabled, macros in the collections tab - PASS existing game, bar not already enabled, no macros in the collections tab - PASS new game, bar already enabled, macros in the collections tab - PASS new game, bar not already enabled, macros in the collections tab - PASS new game, bar not already enabled, no macros in the collections tab - PASS I did not conduct any tests with Vivaldi, since it is not a supported browser.