There are a couple of things to try.
1. Sometimes sketches need to be hidden otherwise they show on models.
2. Tangent Edges might be turned to visible and that will show up on bend radii.
3. Have you set it to transparent by mistake, see here for an explanation.
https://www.javelin-tech.com/blog/2017/07/solidworks-transparent-part/
If a model persists in misbehaving for some reason, try saving it as a Parasolid, then opening that again and saving it as a part, that seems to flush out gremlins in a lot of cases.
If you find which settings are best for you, I would save a copy using the save settings wizard in the start menu, then if it goes wrong you can always get back to a known starting point by restoring the settings.
Phil
Edited By Phil P on 05/03/2021 22:17:09