It messes up the browser cache somehow. It's happening 4-5 times per day for me if I check the e-mail often.
You can press Command+Shift+R to force reload and it works fine afterwards.
Also, running GMail in Firefox (on MBP) makes Firefox consume 100% of a single CPU core very often. But if I open developer tools to track down the source of the problem, it stops consuming 100%.
Well, at least they stop me from checking e-mail too often. I used to check e-mail like 5-6 times per hour before. Now I do it 2-3 times per day and I feel like it increased my productivity on stuff that actually matters. So, it isn't all that bad ;)
You can press Command+Shift+R to force reload and it works fine afterwards.
Also, running GMail in Firefox (on MBP) makes Firefox consume 100% of a single CPU core very often. But if I open developer tools to track down the source of the problem, it stops consuming 100%.
Well, at least they stop me from checking e-mail too often. I used to check e-mail like 5-6 times per hour before. Now I do it 2-3 times per day and I feel like it increased my productivity on stuff that actually matters. So, it isn't all that bad ;)