PR4100 Recycle bin disappeared behaviour

PR4100 Firmware version 2.31.195

Connected via SMB

When deleting files or shares with recycle bin enabled, all deleted files will go to the recycle bin(except my cloud android mobile: My Cloud android app ignore recycle bin purpose).

When share deleted, if there is no share that are using recycle bin. Recycle bin will disappear, its does not show in hidden folder too.

When i add or edit share with enabled recycle bin. Recycle bin will appear again with the deleted files inside.

Disappearing recycle bin based on shares usage on recycle bin is not smart, especially when i accidentally deleted last share using recycle bin, i was surprised when looking for recycle bin but the folder has been disappeared, make me think that i already lost file even after that deleted share using recycle bin.