[opensuse] Spell check not working right in 15.0 Thunderbird

I have an email with quoted material, with all the quoted text underlined in red, while the normal text works. I change the language from English to Spanish and reverse, no change.

I have an email with quoted material, with all the quoted text underlined in red.

After I start this post, Thunderbird behaves correctly on the old and new mail. I applied an update today. 68.1.1 (64-bit) -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)