Overnight I received half a dozen emails that had swapped subject lines and body content with old emails and had odd headers. Some of the headers look like the HTML of the email has been split into header key/value pairs which therefore make no sense (see image attached). I use GMail and realise this could be a Google problem but some of these emails appear correctly when viewed on the GMail Android app on my phone so Thunderbird is more likely. I run Linux Mint 20.3 Cinnamon with all latest updates including their recently (2 days ago) update of Thunderbird to V91.11.0 (64-bit) and Kernel 5.15.0-43-generic. Tbh, at first I thought I'd been hacked, but thought I'd post here in case there's an issue with TB that needs looking at, after rebooting to double check the fault remained. Latest emails appear to arrive as normal. It gives the impression something is amiss with a parser somewhere. Please advise or disregard as necessary. Regards