That thread related to OWL users, and support for OWL is provided by the author. A response in the OWL issue from the author can be found here https://support.mozilla.org/en-US/questions/1322331#answer-1385438

Now of course you do not mention OWL, so really I have no idea what you are expecting. If it is an OWL issue, your in the wrong place as the other topics show.

If it is not OWL related you have actually offered nothing from which someone might begin to work out why you are having issues.

Two common issues where mail disappears as dodgy internet connections so mail syncronises to oblivion because the server is uncontactable and interfering internet security/antivirus which also make the server uncontactable but for a different reason.

> That thread related to OWL users, and support for OWL is provided by the author. A response in the OWL issue from the author can be found here https://support.mozilla.org/en-US/questions/1322331#answer-1385438

Noted. But the problem is the same. "Disappearing messages" is a TB display problem (for starters) not a server-type problem. It may _stem_ from server access but is nonetheless display-related. Further it is a newcomer on the latest version so any server access issue hangs over from the previous version. Inference: the display issue is a newcomer with the new version. I have seen other display issues but I cant yet confirm (to myself let alone anyone looking to debug this) - having used TB for so long one gets a "look and feel" and so when it changes one notices the changes - difficult to put a finger on what changes but it becomes apparent. For example I usually use TB with a maximised window (I am after all the person with 12 desktops). When I click on a message in the in box display I anticipate a new window opening with that message in, and the window opens approximately in the middle of the screen where the last one opened (ie the window opens relying on persistent coordinates and size). What I am getting with this version of TB is the new window opening bottom left (change #1) and a band of cloured snow top and right between the new window and the boundary of the TB working area (ie excluding the topmost band. This snow vanishes again after about 2 secs and the band is redrawn to show the window underneath. Conclusion the window re-draw has been re-written. Q1: is this a property of LXQt (which I have also just installed, removing LXDE) or this version of TB. Q2: Has missing messages issue (swap mailboxes, go back) appeared as an artefact of work to the windows drawing functions in teh same way as my coloured snow, or something else?

> Now of course you do not mention OWL, so really I have no idea what you are expecting. If it is an OWL issue, your in the wrong place as the other topics show.

With respect I don't know what OWL is (no disrespect to them) and I wouldn't dream of using an Outlook server :/ Also with respect this is a new thread. So OWL is not relevant.

> If it is not OWL related you have actually offered nothing from which someone might begin to work out why you are having issues.

Not helpful. I never said I was a coder competent to address this bug. What do you want to know? I'm sharing the visual experience I have seen together with a work around and, most of all, endorsing that the problem hasn't gone away (if I am right about what the OWL users were seeing and it was not contained in the OWL code) but in any event I'm seeing it.

> Two common issues where mail disappears as dodgy internet connections so mail syncronises to oblivion because the server is uncontactable

I disagree. We use mobile broadband so "dodgy internet connections" is our lives. So severe is this issue that we have taken OfCom to task with this on several occasions as a political / demographic issue (and you thought that this thread was about a techie problem... ;) ) When the connection times out one gets an error message "server unreachable" and life continues as normal. The point perhaps you missed is that I am using POP3 and IMAP. The mailboxes (POP3) and mailbox copies (IMAP) are local so there is no comms-related reason for the mailboxes to disappear when the comms is broken. Even if there were (cf using webmail where the mailboxes are all remote - here they are not) I would expect some persistence in display. So I reiterate that I think that this is a display problem not a comms problem.

> and interfering internet security/antivirus which also make the server uncontactable but for a different reason.

I think you also missed my description in my preamble, that I am using Ubuntu 20.04. No anti-virus required, none operating. Plenty of firewall functions inherent but never been a problem since I dumped Windows in 2011 and used a progression of kernels, Mageia, Mint and Ubuntu since. I have spotted that I suspect someone keeps trying to hack into my TB installation (it looks like without success), I do have Tiger and Tripwire running chick trigger at 00:00 (but not during the day).

So in terms of taking this thread forwards, any comments on what I need to find and paste here?