Currently I am working on a dynamic mesh component which was working fine pre 4.19. When I tried compiling it in 4.19 it crashed because the FShaderResourceViewRHIRef was not set directly.
I fixed this by adding a fix from another post: bSupportsManualVertexFetch = false.
Even though the project does run again without crashing I have a weird texture / TextureCoord problem.
I added two pictures, the top picture is from 4.19 (without the manual vertex fetch) and the bottom one is in 4.18.
https://forums.unrealengine.com/filedata/fetch?filedataid=141366&type=thumb
https://forums.unrealengine.com/filedata/fetch?filedataid=141365&type=thumb