There is a problem with sessions and tabbed browsing in Firefox. Per window (with several tabs) Firefox can only keep track of one cookie per URL. There are two workarounds:
Hope this helps.
Use a different address to reach the applications: 127.0.0.1 and localhost. They refer to the same ip-address but apparently the match is made textually
This seems to be working. Thanks
Good question. I assume it is because the browser can only keep track of one Mendix session. Does it also happen when you use two different browsers (Firefox and IE for example)?
It seems that working in two different browsers prevents the problem. But what should I do when I would like to run more than 2 applications? Would using a different username with a MxAdmin userrole solve the problem?