That's strange! We have been able to reproduce that issue off and on with beta 3, but haven't been able to pin down what's actually causing the issue yet. We think it might be ClipboardFusion butting heads with another program that hooks the keyboard, like Royal TS or Team Viewer.
Would you be able to send us a debug log so we can have some more information to help us track this down? Here's how to get one to us:
On the Troubleshooting tab, change the Logging drop-down to "L1: Log Minimal"
Restart ClipboardFusion
Reproduce the issue and note the time so we'll know where to check in the log file
Send us the %%APPDATA%%\ClipboardFusion\ClipboardFusion.log file (can be found by clicking the Open Log button on the Troubleshooting tab)