Is it common for a normally docile snake to become kinda grumpy/pissy??

I've had this snake for 3 years - she was my first ever snake. She is a normal bp weighing about 1800 grams.

Nothing has changed in your tub but lately she is sorta pissy - she calms down after I get her out of the tub but she goes into striking mode when I open her tub lately - this is soooo unlike her.

Just curious if this is common - will it pass or do I need to be concerned.

Thanks for your help.