2.4 bug with normal maps

[digital_technologies]

I am workign on a scene with glass that has normal maps for bump.
With vantage 2.3 works nice, but with vantage 2.4 the bump stops workgin and instead looks like smoke in the diffuse of the glass not like distortion on the glass.
I think there is a bug

[vladimir.nedev]

Can you send us the scene that shows this difference between 2.3 and 2.4 ?

Greetings,
Vladimir Nedev

[digital_technologies]

a friend of mine tryied the same and found out that .tx format is the problem. cosmos glass safety material for instance does not work.
when converted to jpg it worked

[digital_technologies]

we figured out that if you fix the thin walled support in ior refraction it fixes the problem ( if you unclick)