When I'm trying to place BluePower Gates on my modpack:
video

@pitrex29 @Breadabix
(I am not good at English, so I will use machine translation, which may be strange English)
Are you using OptiFine's Fast Render?
When it is turned off, it may not be a white screen.

Having same issue

Not actively supporting the 1.7.10 version anyone can fork the last version and support it if they want to.