User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0 Build ID: 20170612121707 Steps to reproduce: I have a directory on my gmail account with the label: "Recycle bin (no autoclean)". I did this because I wanted my deleted messages in a separate folder. I have this account connected with thunderbird and It automatically selects Trash (it does detect it as a standard Gmail label and files it under "[Gmail]"). I see my folder "Recycle bin (no autoclean)" not under Gmail, but just under that account. I went to account settings, to Server Settings and, as with all my accounts, selected under "When I delete a message" - "move to this folder" "Recycle bin (no autoclean)". Actual results: After restarting the GUI, I see that the icon of "Recycle bin (no autoclean)" and that of the standard "Trash" is that of a trashcan. But shortly after that, that of "Recycle bin (no autoclean)" changes back to that of a normal directory and Trash stays that of a trashcan. When I delete a message it just goes to "Trash" Expected results: After restarting the GUI, the icon of "Recycle bin (no autoclean)" should be that of a trashcan and that of "Trash" that of a directory. When I delete a message it should go to "Recycle bin (no autoclean)".

(In reply to animajosser from comment #0) > I have a directory on my gmail account with the label: "Recycle bin (no > autoclean)". I did this because I wanted my deleted messages in a separate > folder. I have this account connected with thunderbird and It automatically > selects Trash (it does detect it as a standard Gmail label and files it > under "[Gmail]"). I see my folder "Recycle bin (no autoclean)" not under > Gmail, but just under that account. Is the behavior documented anywhere? > After restarting the GUI, I see that the icon of "Recycle bin (no > autoclean)" and that of the standard "Trash" is that of a trashcan. But > shortly after that, that of "Recycle bin (no autoclean)" changes back to > that of a normal directory and Trash stays that of a trashcan. When I delete > a message it just goes to "Trash" This is likely to be intended behavior: <https://dxr.mozilla.org/comm-central/source/mailnews/imap/src/nsImapIncomingServer.cpp#1550> | // If we're a gmail server, we clear the trash flags from folder(s) | // without the kImapXListTrash flag. For normal servers, we clear | // the trash folder flag if the folder name doesn't match the | // pref trash folder name. | if (isGMailServer) > Expected results: I'm not sure, if this will work, but you may try setting the preference: "mail.server.default.allows_specialfolders_usage" to false. Menu: Tools -> Options -> //Advanced\\ -> /General\ -> [Config Editor]

(In reply to Alfred Peters from comment #1) > I'm not sure, if this will work, but you may try setting the preference: > "mail.server.default.allows_specialfolders_usage" to false. Since this is a "per server" preference, you'd have to try mail.server.serverXX.allows_specialfolders_usage where you have to replace XX with the number of the server in your configuration.

Although it was'nt in Menu: Tools -> Options -> //Advanced\\ -> /General\ -> [Config Editor], but in Topbar: Edit -> Preferences -> Advanced -> Config Editor and it was not a per server preference (there were no per server preferences for this setting), it didn't work, unfortunately. I set "mail.server.default.allows_specialfolders_usage" to false by double clicking the setting, but when I restarted the gui, it just did the same as described above.

(In reply to animajosser from comment #3) > Although it was'nt in Menu: Tools -> Options -> //Advanced\\ -> /General\ -> > [Config Editor], but in Topbar: Edit -> Preferences -> Advanced -> Config > Editor So you're using SeaMonkey!? I don't think it makes a difference, but you should have already mentioned it. > and it was not a per server preference (there were no per server > preferences for this setting), You would have to create it. But, since the setting does not work anyway... > it didn't work, unfortunately. I set > "mail.server.default.allows_specialfolders_usage" to false by double > clicking the setting, but when I restarted the gui, it just did the same as > described above. It was worth a try. But it looks like it is hard coded. I'm out of ideas.

I don't understand what you're talking about. I use Mozilla Thunderbird 52.2.1 (64-bit). In no way I'm using SeaMonkey.

(In reply to animajosser from comment #5) > I don't understand what you're talking about. I use Mozilla Thunderbird > 52.2.1 (64-bit). In no way I'm using SeaMonkey. Then excuse me. This is the menu position by my SM. Since this is insignificant for the bug, we leave it at that.

Looks like a known problem. Bug 533140 has some reasoning.