https://bugs.mojang.com/browse/MC-261212 is a vanilla bug and can be seen in vanilla, and its "feature request" resolution is something I find quite disagreeable. EBE allows for editing sign models rather than just their textures, meaning we can get even bigger differences between the front and back than in vanilla. As such, a fix for this in EBE doesn't seem like it would be too far out of scope.
https://bugs.mojang.com/browse/MC-261212 is a vanilla bug and can be seen in vanilla, and its "feature request" resolution is something I find quite disagreeable. EBE allows for editing sign models rather than just their textures, meaning we can get even bigger differences between the front and back than in vanilla. As such, a fix for this in EBE doesn't seem like it would be too far out of scope.