I had same problem, I posted it elsewhere, no answer. I think problem was in bad mesh or bad material settings, but maybe just bug. Anyway, only solutions in my case was:
do backup - if you don’t know how to backup your project, don’t read next points;
remove all directory inside project other than CONTENT - again - do not remove content directory
start your project.
You will lose your project settings and bindings - if any, but you can run it and visual side will be ok. You can also not remove your bindings file or copy it later from your backup file if important.
If somebody know better solution - please tell me, upvote waiting in my questions.
I have seen this issue before, and in my experience this issue occurs when you set the Near Clip Plane within your project settings to 0.0. Check this setting to see if that is the case. The default value is 10.0 which works well in most cases. If you need to modify that value, I would stay away from 0.0 as that is expected to cause issues.
Hi. I not need to check - I removed this project already, but I bet this is reason! This is possible, because I changed it when my weapon was too close to camera on animation. In current project I have it 10, and no problems. Thank’s for advice!
You can answer on my question, I will approve it, or I will close it in next two days.