I started using thunderbird 115 in linuxmint 21. It was upgraded from Thunderbird 102. I see the all text in bigger font size after the upgrade. I see no settings in the "Thunderbird Setting" which effectively reduces the fontsize. If I reduce the system font in Linuxmint "Font Selection", I see fontsize getting smaller but the font size of other application reduce to too smaller size. It is as if Thunderbird has some scaling factor set which is causing this issue. Please help.