Thank you.
1) Configuration | File Operations | File Operations | Custom Copy Operations | Use Custom Copy is ticked?
2) Configuration | File Operations | File Operations | Background Processing | Enable background processing is ticked?
3) How exactly do you trigger the copy?
4) How many items are copied? Are non-empty folders among them?
5) Do you see a progress dialog while the copy is ongoing?
6) Intra or cross volume?
7) Does it make a difference when you close that Network node in the tree?
1) Yes
2) Yes
3) Both normal right-click copy/paste and Copy To Other Pane shortcut via the Hamburger (:dpcopyto)
4) No folders, just files. File number doesn't make a difference, could be 1, 5 or more.
5) Yes
6) Cross volume only we copying NAS to local or local to NAS
6a) Intra volume, issue does not happen both with NAS to NAS and HDD to HDD
7) No difference
It appears that this issue is only occurring when to/from NAS to local. NAS is a Synology DS2419+, wired gigabit connection, latest DSM and PC is Window 10 x64 21H2 (latest patches). The NAS tab (locked) is set to the UNC path of the folder; however, when using a tab with the mapped drive letter, e.g. X:\, the issue still occurs. Again, disable the Color Filter, the issue does not happen no matter what/where I copy to/from.