semi-transparent walls overlaping themselves

I'm using LWRP Simple Lit Shader with Transparency. No matter what blending mode I use, those two walls are always overlapping themselves in corners (depending on camera angle, one is overlaping or second)
Is there possible shader that will not create such weird things and at the same time allow to make certain walls semi-transparent?

 

There isn't really anything you can do about this in LWRP, this is an unsolved issue with real time transparency rendering.
https://forum.unity.com/threads/render-mode-transparent-doesnt-work-see-video.357853/#post-2315934

There are some work arounds, but none are supported by LWRP's shaders or can be done with custom shaders made with Shader Graph. The only solution for LWRP is to not overlap geometry that can be transparent.

 

That's sad
I choose not to use transparent material for walls and instead just disable upper part of wall when it is in the way of camera

 

Are those walls two seperate 3d objects?