Couldn't parse the shader error on valid (and working) shader

[lhog]

Hi!

I'm getting "couldn't parse this shader" error on otherwise correct shaders.
Examples:
https://shaderfrog.com/app/view/2655
https://shaderfrog.com/app/view/2510

This might have something to do with #extension GL_OES_standard_derivatives : enable|require declaration in the fragment shader.

[lhog]

Is this product even supported?
Why no one is responding to the reported issues?