[SOLVED] Visual Artifacts & White/Pink colors on Build

I have strange glitches, visual artifacts in my Project. I am writing to ask your ideas what could be creating these issues, also if you had encountered similar problems in the past.

As my project is 55 GB, it is difficult to narrowdown the problem which every build takes tremendous time and removing/re-adding assets results compilations that take all the day.

For this reason I need your help to narrowdown the problem with your precious feedback if you can offer me any. I will appreciate very much for any feedback.

On the below picture, I shared a comparison of Editor (Left) and Build (Right) views. Everything works fine on Editor, but when Built, both models and UI have strange visual artifacts, such as pink/white colors or complete mess in colors.
The below look is better version after I baked lighting, before that the scene was complete white except the models with legacy shaders.

I am using Unity 2017.4.35.

[ATTACH=full]Pic[/ATTACH]

History: In the past I had imported built-in shaders, tried to edit Standard shaders amateurishly by mistake, then I decided to not use them, so I removed. I am unsure if that could be the reason. Also I had made false lighting bake in the past, which resulted complete whitish-pinky models in Scene, but as I rebaked, they all were fixed but these models stayed with somewhat pinky materials in Build after that.

What can fix these visual issues, any ideas? Thanks!

Further info:
Texts are TextMeshPro.

It is strange this error affected UI, TextMeshPro and materials of 3D models and disappearance of UI elements (as seen in 2nd and 3rd right pictures, which the UI picture must be not visible on camera due to mask layer)

Any feedback, what could be the reason, what do you guys think?

I solved the issue by saving all gameobjects in the Hierarchy of the Scene as a single Prefab, then transferring the prefab to a fresh new scene. Now everything works properly without any problem or glitch.

I was using the same scene for over 1 year (by moving to duplicates as different versions of the scene), but it seems scene got corrupt in time and it created this issue. To give a better comparison, my corrupt scene is 3487 KB and the fresh scene with same gameobjects is 33 KB at the moment.

Thus instead of worrying about lighting, assets/plugins you added, shaders, etc. first it is better to create a complete new scene and move all the gameobjects to there for a fresh start. I hope this feedback can be helpful for anyone who encountered similar issues.