This still seems to be an issue with Thunderbird 60.4 and Ubuntu 18.04.
If I move Thunderbird to the secondary monitor and close it (not maximised) it will re-open on the primary monitor maximised. I'll look for an upstream bug report.
This still seems to be an issue with Thunderbird 60.4 and Ubuntu 18.04.
If I move Thunderbird to the secondary monitor and close it (not maximised) it will re-open on the primary monitor maximised. I'll look for an upstream bug report.