by ShawnMilo on Tue Dec 04, 2012 9:19 pm
In addition, I'm having the same problem (on 64-bit Xubuntu) when I copy/paste.
Do you have a 5-second timer somewhere in your code? Because this looks like a huge clue:
When I copy then paste, then use the arrow keys on the keyboard, the cursor stays put but the highlighting in the left margin moves with the arrow keys. If I type, the text is entered by the highlighted margin, not the cursor. If I take my hands off the keyboard and wait, it looks like after exactly five seconds it will correct itself.
I hope this helps.