What you you doing in Thunderbird at the time that it hangs? Does CPU usage for Thunderbird show as being high, or low or zero? FWIW, other reports https://mzl.la/2UsWA9Y If you do not have any add-ons, can you try the beta from https://www.thunderbird.net/en-US/channel/
Bug 1527965 Comment 1 Edit History
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What are you doing in Thunderbird at the time that it hangs? Does CPU usage for Thunderbird show as being high, or low or zero? FWIW, other reports https://mzl.la/2UsWA9Y If you do not have any add-ons, can you try the beta from https://www.thunderbird.net/en-US/channel/