Sounds like you have the notorious digger mouse or improper bedding maybe glue a small piece of cardboard to the underside of the trigger

This ^^^^
But I use fish oil instead of peanut butter

I use the yellow big pan version and put a little peanut butter in the small cup on the pan. But I can see how the peanut trick would work too.

Caught #3 .....and the peanut stayed glued !!!!!

This looks interesting.

Use the Yellow plastic pan traps. They have a small bait cup that you can press a good paste bait into them the won't come out on firing. They can be used many times before rebaiting if you use a good attractant.

I trail / blind set for most of my mouse and rodent work once I learned their behavioral travel patterns. No bait needed. Cotton and fiberfill attached to the pan will work also.

Use peanut butter and attach a seed to each slide of the pan and bait the pan also. They get comfortable.

Vinke....we've all watched . them sit on the trap..and lick the

Peanut Buttah clean off...without firing the trap .

They have to bite the peanut...thus ..making the trap fire.

That is why you use the nut butter to secure the nut to the pan and the sides of the trap….
Telling you what worked for me doing it for a years for a living….