To preserve opened folder structure when dragging mail to folder

[ratermir]

Is your feature request related to a problem? Please describe.

Folders are re-arranged during mail dragging.
It's probably an inappropriate design rather than an error.

Describe the solution you'd like

To preserve open folder structure as it was before dragging started. Allow to drop mail to the already opened folder.
Don't move with the folder structure at all (move it only if I need to drag above / bellow visible part).

Describe alternatives you've considered

No response

Additional context

Currently, when I open some folders in the left side and then I drag any mail into it (to the left), all opned folders are closed, some other (maybe first ?) folder is opened. I have to navigate to my target folder (which was previously already opened) through the bumpy path to the target folder (which is totally non-intuitive and user anti-friendly) and then I can drop the mail to desired target folder.
Additionally, I need to go this rough path for every mail to the same target folder.

[zenlord]

I believe this is a bug and not just an enhancement.

What I expect to be normal behavior, is:

1. I collapse/open the mail folders to show the mail folder that I want to see
2. I drag an email into the desired mailfolder

What I experience with NC Mail:

1. I collapse/open the mail folders to show the mail folder that I want to see
2. When I start dragging the email, the mailfolders suddenly rearrange into a single flat structure, and today the desired mailfolder is not even showing (before it was showing, but in a different location than I expected it to be)

[tubihg]

The event moving a selected mail collapses all folders. With 100 folders and Subfolders it is anoying and bearly impossible to drop a mail at the right place.

Expected is like perhaps in Apple Mail, that one is scrolling to the desired folder or subfolder and the moving he mail to the desired folder.

Moving a mail to a folder with subfolders, the folder should open after a certain delay and show the subfolders.

This is an important feature for one of my customers. Without this feature the Nextcloud not the right tool.