Shield Plus Dropping Mags while sitting

[Old cop]

My older LCP had the mag drop problem when pocket carried in almost anything BUT a Kydex holster that covers the mag button.

 

[Sb76]

Shield plus mag drop

I also have a shield plus as my edc. I had a cheap 20$ kyfex holster off Amazon and never had a mag drop issue when carried appendix. Switched to a alien gear shapeshift with 4 o'clock position made for the shiel plus 9mm,and now it's always hitting the mag release off my back. I'm not a big guy either and there is no kydex covering the mag release its kydex in front and fabric behind.
I'm gonna assume it's a gun issue since my 9mm ez 2.0 does it as well in all its specific holsters . Also the plus is built to fit the same holsters the original shield takes... as per S&W
They fit perfectly it's not like jamming it in a different form factor.

 

[catcus-jack]

I also have a shield plus as my edc. I had a cheap 20$ kyfex holster off Amazon and never had a mag drop issue when carried appendix. Switched to a alien gear shapeshift with 4 o'clock position made for the shiel plus 9mm,and now it's always hitting the mag release off my back. I'm not a big guy either and there is no kydex covering the mag release its kydex in front and fabric behind.
I'm gonna assume it's a gun issue since my 9mm ez 2.0 does it as well in all its specific holsters . Also the plus is built to fit the same holsters the original shield takes... as per S&W
They fit perfectly it's not like jamming it in a different form factor.

It is a holster issue.