How to reproduce:
1. Open the “Tilemap_low_alpha_breaks_collider“ project
2. Open the “SampleScene“
3. Enter the Play Mode
4. Observe the Game view

Expected result: The “this_falls_through_44_but_not_244“ GameObject does not fall through the “Tex_alpha 44“ tiles
Actual result: The “this_falls_through_44_but_not_244“ GameObject falls through the “Tex_alpha 44“ tiles

Reproducible with: 2021.3.44f1, 2022.3.48f1, 6000.0.21f1

Reproducible on: macOS 14.6.1 (Intel), Windows 11 (Reporters)
Not reproducible on: No other environments tested

Notes:
- Does not reproduce when the texture is not a part of a tilemap (to see that move the “this_falls_through_44_but_not_244“ GameObject with WASD to collide with “normal_game_object”/”normal_game_object2”)
- According to the reporter the alpha value threshold for the collision not to be detected anymore is inconsistent
- Reproducible in the Player