In this case, you will be able to resolve the issue by accessing your Synaptics driver settings and disabling the feature altogether. If it is, the only fixes are to either unstuck the key or to replace your keyboard with a new one. If this scenario is applicable, you should use the On-Screen Keyboard to investigate if the Ctrl key is indeed stuck.
Physically Stuck Ctrl key – In the vast majority of cases we ended up analyzing, this particular issue occurred due to a Ctrl key that was physically stuck and was causing this behavior in every single application.
