XF 1.5 Firefox "back button" not working

[downeastboat]

I have uers complaining when they go to a thread and then try to go back the back button does not take them anywhere.. all using firefox to access my forum.. any help appreciated thank you

 

[AndyB]

Are you able to reproduce the problem using Firefox on your forum?

 

[downeastboat]

Im not but multipe users are complaining about the same issue

 

[AndyB]

Im not but multipe users are complaining about the same issue

Ask them to clear their cache to see if that resolves the problem.