Is your feature request related to a problem? Please describe.
When manually selling multiple items the bags are reordering in real time. This causes items and categories jumping around and you can click a wrong item really easy. Take a look at the video below

Describe the solution you'd like
A option for fixing this will be keeping an empty slot in the position of the sold item and prevent the bag from reordering.
This is already a solution I've seen in other addons. Probably not everybody's cup of tea, so a config for this would be OK.

Describe alternatives you've considered
TBH I couldn't think of any other alternative solution to this behavior.

Can you try this build and report back?
Baganator-377-2-gab7e038.zip

Available in v378, out shortly.

Looks good. Thanks a lot!

I am "unhappy" with this behaviour as well.

Possible fix would be (option preferred) to prevent rearrangements from happening due to items being removed from bags until the bags are closed and reopened.

Working on it right now, so a solution should be out soon.