Resource pack sideways log render glitch

I have been recently working on a resource pack, and it was working fine up until I updated my Minecraft to 1.9.2. Sideways logs now appear to have the "missing texture" texture (purple & black checker pattern). I have not modified the "oak_log", "cube_column", "cube" model files, or the "log_oak" or the "log_oak_top" files.

I have tried deleting those files and reloading the resource pack, adding them back in etc. but still the texture rails to render. I have also tried copying the "new" files into the correct places into my resource pack from 1.9.2, but the same happens.

Hope you can help,

P.S. This applies to all types of log, I just used Oak as an example. It also only happens when the log is placed sideways (X or Z axis)