Due to the myriad of possible ways to open bags in WoW, there is no possible way to insulate against conflicting with bag addons.

Many addons now offer the option to open bags when the auction house opens. This allows these addons to better control bag container functionality.

Auctionator only opened the default bag container frames and did not have the complexity encoded to toggle bags closed when the auction house closed. As such, the functionality of this setting still required either manual interaction with the bag containers close button or keybinds pressed to close all bags.

Moving into Legion, the best option to prevent compatibility issues is to remove this feature entirely.