Vertical lines on screen after replacing with new screen.

I recently replaced my broken screen on my Motorola Z3 with a new screen from ifixit.

Before seating the screen I connected the ribbon and plugged in the phone just to make sure it would work. The charging icon came up just fine, no issues, so I applied the adhesive, and seated the screen.

After I was sure the adhesive was set I plugged the phone in to charge and there were vertical lines on the screen that would appear then disappear. Applying pressure to the screen seemed to make them appear, and sometimes disappear.

My first thought is that the ribbon is not completely seated in the connector, but before I attempt to rip it apart again I wanted to know if this is a known issue with replacements, and if there is a fix.

I have restarted the phone several times, and the lines still appear and disappear. The screen works fine other than this problem.