When deleting or detaching an attachment from an incoming message, the entire message body gets reformatted.
Since I installed version 52.9 (and the same is true for the beta version 60.0), the function "detach attachment" or "delete attachment" completely reformats the entire message text. Often the text ends up not readable.
Going back to version 52.8 solves this problem, but I guess there is a way to solve it also in the newer versions of Thunderbird.
Many thanks for your help.
Wšě wotmołwy (1)
You're not the only one. See https://support.mozilla.org/en-US/questions/1224698
There's no solution (yet).