Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1
Earlier today I was reading usenet & gmane but suddenly when I went to
gmane.org.unix-heritage.general and selected an article to read, it no
longer loads it rather than doing a popup asking to save articles. I
even exited, and removed preferences.xml (always seems to get corrupted
and cause bugs/crashes) and restarted and went back to select article.
It did the same thing. Apparently the article contains a .png that when
I pressed right mouse button and selected 'read article' loaded that.
Afterwards I could read plain-text articles fine.