How to fix landing offset bug after jumping with irregular-sized character sprite?

As the title goes, my concern is this bug. When I jump on, my landing is off.

I am using a much taller character. Unlike the default rounder chibi-character formats, you land like 7 pixels off deeper with irregular characters. Is there a way to fix or at least a trick to adjust this?

Thank you for your kind consideration.

This kind of question would be better if complemented by image, as I believe having larger/smaller size of character sprite should not matter (unless I'm understanding how sprite and position handling in default script wrong).

Since the forum file upload is having issue (or it isn't?), maybe you can try to upload the screenshot of it in imgur.

Thanks Theo for mentioning that sprite size shouldn't matter. Knowing that made me to put that to the test by using a clean custom script-less project, and the results are what you claimed is correct.

I never knew how it was possible in my project, none of anybody's custom script causing it... until I found out that the culprit was... my very personal script that redefines my made up $game_player.movespeed.

It was set to (2.9) reverting it to (3) fixed it, perhaps a decimal defined speed instead of integer affects jumping to the point of breaking. Thanks Theo for a simple yet very helpful reply.