Crazy 5d3 Question

I have a relatively new 5d3, so far it's performed perfectly.
Yesterday I had an opportunity to shoot for an hour or so at the Merritt Island National Wildlife Refuge.

I had the 5D3 attached to my 500 f4. I was shooting in AV mode, nice bright day. I noticed that the exposure level indicator was not visible that instead all way to the right of the scale was a small arrow pointing to the right.

When I went to manual mode the indicator came back into view and I was able to shoot manually. However, in AV or TV mode the indicator was gone.
I took out the battery, changed lenses, it never changed. Finally I cleared all the camera settings and restarted and it was back to normal.

In the AV and TV mode I was able to see the indicator again and it responded to the exposure compensation dial.

I am hoping that rather than poring over the 401 pages of the manual, that someone can tell me what in the world I did to make that happen.

I really appreciate anyone's help in advance.

thanks much

GG

why not send it into canon it should be under warranty still

that is weird.... I've only saw that arrow in the meter in manual mode... usually when I switch over from av or TV and my previous manual settings were either way over exposed or underexposed....

Only thing I can think of is if you were set to f4 and your ISO was set high and your camera maxed out the shutter speed over 1/8000....

Okay, to save you from "poring [Sic]over the 401 pages of the manual", go to page 169. Sounds like you set your exposure compensation beyond +-3 stops:

Lol... I didn't think about that... didn't know you could set it beyond the three stops...

Thanks, that saved a lot of looking!