Toggle focus box strangeness

[garry23]

All of a sudden, out of nowhere, my 5D3 (latest nightly) started acting strangely.

If I toggle left, right, up, down the focus box shoots the edge.

If I switch to ML menu, the menus keeping cycling.

I haven't changed any setting since the last time I used the camera: and it's not April 1st

I even removed all my Lua scripts, but still the same behavior.

Has anyone else experienced this?

[garry23]

Brainwave!

It is the Bulb_ND module doing it 

Looks like I'll be dumping Bulb_ND for now