Newly crafted and removed roofing not the same | v1.15.6 stable

[Dachantenne]

I just discovered that after building and removing the same roofing, it will not stack with the newly crafted ones. I could reproduce this only for the roofing shown in the screenshot (so not for corners), but for every material.

After building one of the roofing of the 35 and removing again, it stacks to the 2 roofings, but not to the 35 again:

Also, I'm unable to stack them "manually" by doing so in the inventory with the mouse.

 

Steps to reproduce:
- Craft/Cheat some roofing (no corners etc), but every material
- Build one
- Remove it
-> It will not stack