I'm using kubuntu 16.04 64-bit on a Toshiba Satellite S55-C5274. It's relatively new and has no known hardware issues.
Dolphin help about says:
KDE Frameworks 5.18.0
Qt 5.5.1 (built against 5.5.1)
The xcb windowing system

Everything was fine until a day or two ago. Now, when I press numlock, I get an accessibility dialog.
I select Deactivate all AccessX features and gestures and click either no or yes. Neither gets rid of this behavior.
On the desktop I press backquote and I get the Run dialog.

I went into System Settings->Workspace->Accessibility->Activation Gestures and unchecked Use gestures for activating sticky keys and slow keys and unchecked Turn sticky keys and slow keys off after a certain period of activity. I left Use the system bell whenever a gesture is used to toggle an accessibility feature and Show confirmation dialog whenever a keyboard accessibility feature is toggled checked. This doesn't help either.

I want my numlock to be a normal numlock, etc..

How do I fix this?