Comment # 6 on bug 1132954 from Alexander Shchadilov

Please pay a bit more attention to details when filing a bug report. It has
"Firefox" in a "Component" field (you can choose "Other" if affected software
is not listed). A report summary (title) and description should have had a
mention of Thunderbird, preferably with a package version number presented in a
description. Providing accurate and comprehensive information helps people who
will try to confirm your findings.
I was able to reproduce this with Leap 15.1, MozillaThunderbird
60.6.1-lp151.1.9, plasma5-desktop 5.12.8-lp151.1.3. Additional screencast is
attached.