Thank you for your post, and I apologize for the late reply.
I am unable to replicate the problem with FileMaker Pro 11.0v4 running under Mac OS X 10.7.2. I know some time has passed, so if you have found the cause of this issue, please post here in case others run into the same issue. If not, what other applications are running on your machine? Do you have any plug-ins installed? If so, have you disabled them to see if the problem continues to occur? Since restarting FileMaker Pro doesn't fix it, do you have to restart the computer? Or, have you tried quitting other applications prior to re-launching FileMaker Pro?
Any other information you can provide may be helpful in narrowing down the possible causes.
Still have not identified a pattern. Here are our findings so far:
• Restarting FM does not fix it.
• Logging out of the OS user account and logging back in does not fix it.
• Restarting the computer fixes it, but only on the 10.7 machine, not the 10.6 machine. On the 10.6 machine the problem is consistent. On the 10.7 machine it occurs over 50% of the time.
We are often running many apps at one time and usually the same apps between machines, nothing too far out of the ordinary. I can provide System Profile reports if that helps.
I have not tried disabling plugins, I will try that and report back.
Note also that if you have FileMaker running in the background, pressing a modifier key while working with another app can be detected and responded to by FileMaker. See this thread for more info on that issue: SHIFT to open file with password promtp, when importing