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It is possible, I suppose. Doubtful though. What browser are you using? XOOPS using the 'meta refresh' feature to automatically jump to the next page. If you are using a browser where this is not implemented correctly (e.g. strips off arguments from URL) then it could be the problem. But i'm not sure that any browsers have this problem.
The other problem could be in include/functions.php, function 'redirect_header'... There is a line where it determines the current page url for jumping back after login, for example. It uses $xoopsRequestUri, which is computed in include/common.php. If your server is not setting certain variables REQUEST_URI or SCRIPT_NAME properly then that may also be the issue. What is your webserver? If possible, is there any way to do some debugging with include/common.php and print/echo out the value of $xoopsRequestUri for a few example pages? This would be helpful to determine if that is the source of your problems.
Just out of curiosity, do you have problems with *other* redirects on the site... e.g. after posting a comment on something do you get redirected back to the proper location?