Tested with Optifine+SEUS

Problem with SEUS. It doesn't happen with other shaders.
It is likely caused by mojang changing "grass" from being the dirt + grass block to the 1-high shrub in 1.13.2.
SEUS is probably using the 1.13.2 block id mappings on 1.12.2

Also a cool gif of it from ages ago:

This hapens to me with SOUS. In 1.12.2 is their a way to make it stop blowing the grass

I can't test it myself because SEUS doesn't work on my computer, but I think that you can fix it by editing the block ids in the shader. You can ask for help on the Shader Labs Discord.