Created attachment 9013170 gmailfolders.png
I see no problem deleting messages to Trash with my Gmail IMAP account, or any of my 2 POP3 accounts using TB 52.9.1 from Ubuntu on Ubuntu 18.04.
His screenshot doesn't show what folders appear under the Google Mail folder tree when expanded. That is where my Trash folder is located.
I also have no problem with TB 60.0.
Could you get the reporter to try Thunderbird's version 60.0 from https://www.thunderbird.net/en-US/thunderbird/all/
Created attachment 9013170
gmailfolders.png
I see no problem deleting messages to Trash with my Gmail IMAP account, or any of my 2 POP3 accounts using TB 52.9.1 from Ubuntu on Ubuntu 18.04.
His screenshot doesn't show what folders appear under the Google Mail folder tree when expanded. That is where my Trash folder is located.
I also have no problem with TB 60.0.
Could you get the reporter to try Thunderbird's version 60.0 from https:/ /www.thunderbir d.net/en- US/thunderbird/ all/