Using an upgraded 19.04 system, I enabled proposed and upgraded libfm-qt6 to 0.14.1-0ubuntu2.1. The change does not take affect immediately, but does after stopping and restarting pcmanfm-qt. That can also be accomplished by logging out and back in or by restarting.
That said, it clearly does not require any no-change rebuild of pcmanfm-qt so that comment in the regression potential was merely being cautious based on previous experience. It is true that this doesn't change the ABI so the statement is irrelevant.
Using an upgraded 19.04 system, I enabled proposed and upgraded libfm-qt6 to 0.14.1-0ubuntu2.1. The change does not take affect immediately, but does after stopping and restarting pcmanfm-qt. That can also be accomplished by logging out and back in or by restarting.
That said, it clearly does not require any no-change rebuild of pcmanfm-qt so that comment in the regression potential was merely being cautious based on previous experience. It is true that this doesn't change the ABI so the statement is irrelevant.