I don't have problems even with 25 version but again that might be very individual: different sites, different projects and etc. There is one little thing you

I don't have problems even with 25 version but again that might be very individual: different sites, different projects and etc. There is one little thing you can do: enable all reporting in Advanced settings if you have not done that yet. Mozilla will get at least some information that might be later used for browser improvements.