Won't start after filling up!?

It has happened twice which is exactly how many times the bike has been gased up since I've owned it. After filling up with it just cranks but will not start. Let it sit a minute or so and try again and I think I smell raw fuel. It starts after a little bit of throttle is applied and will not idle, must keep up the revs or it will stall. Runs poorly once under way, cuts out suddenly like fuel or spark is cut off. Within a mile all comes back to normal like nothing is wrong. Do not see any error indicator on the dash. Fuel pump was replaced by previous owner but don't the year of the replacement. My questions:

To what point should the tank be filled? I have not been filling to the top but a little above the metal insert.

Think fuel is getting in the cannister and thus into the throttle body and flooding the engine?

Any help would be greatly appreciated.

Do you hear the fuel pump priming when you turn the key?

I have a 2008 with original fuel pump. I also have original battery. I have original gas tank as well.
Mine is NOT a California model though.

I fill tank until no more gas can go in without it spilling over onto the tank.
I do this with bike on side stand.

Might help for you to list any modification to your bike that have been done.

Please check all your battery connections.

Also - how many mile must you travel before bike starts operating "normally"?
How long before you can shut off bike, then restart it without any issues?

A bit more of a pain in the ass to check, but a few people have had some really strange things happening and discovered their spark plug has been broken. Like cracked ceramic.

If you feel like diggin down deep...might want to check and/or just replace spark plug.

The problem is what I suspected. Filling the tank too full and gas running into the charcoal canister and into the throttle body thus flooding the engine. A bit more care when filling up plus will likely remove the canister this weekend.

yup get rid of that damn eyesore and call it a day :)