So, in UE3, you could do this:
When you do the same in UE4/UE5, you get this:
The only way to “fix” it, is by immediately adding an Abs behind it:
This sucks, as every time the TexCoord could potentially go negative (eg. parameters coming from a Material Instance), I have to compensate using an Abs.
Is there any way to restore the UE3 TexCoord behavior?