TB keeps crashing on my win 10 machine (I can't really pinpoint the cause so I just live with it). However, what I can't live with is TB closing all my open e-mails. I keep open e-mails to remind me what people I need to get back to. When TB crashes it closes all of the e-mails and I need to look for the drafts in the drafts folders (I have many) if I had 10-15 e-mails open that can be a tedious job.
Firefox and Chrome both have the option to reopen tabs after a crash - can you please add this and open e-mails - this will save so much time.