Cursor going back to beginning of message, then unable to send

Hi All,

I have a user on Spark version 2.6.3.12555 (all other users in her org are on the same version). She continues to have an issue where she goes to type a message to a coworker then clicks to send it and the cursor goes back to the beginning of the message and will not send. I have uninstalled and reinstalled it a handful of times and it's still an intermittent issue as of today. Has anyone else experienced this issue? And if so, what is the fix? Is there a patch for this?

OS= Windows 7 32bit

Thanks for your help!