A suggestion about transparent issues

I realized that transparent issues appears more when actor is in interiors. If ExtraShaders are disabled, there are no issues. But if you go to exteriors, tree trunk dissapears. Perhaps Alenet or someone with his skills can make some change that when an actor go inside ExtraShaders be disabled and if actors goes exteriors ExtraShaders will be enabled again. It'll didn't resolve all issues but it could be a bandage. Maybe a tiny esp can do it ..

Are you getting the transparent issue with the latest version... v9.01?
Also I believe OR is designed around Nvidia... and that these sorts of bugs only occur with AMD cards, so I am guessing you might be using an AMD graphics card.

There is no more the ExtraShaders in last OR.

I recently installed the last version of OR with the OR resource package. In the version 8.4 I had many transparent models issues (buildings, bodies, some armors), that disappeared only without the ExtraShaders folder. Once I've switched to the latest version, I saw that those issues appear only in certain circumstances (in interiors bodies become transparent). I'm trying to find out a solution to this.

If you run an AMD card, that will most likely be your problem. OR was developed with Nvidia.