I purchased several texture packs today and one of them gave me an issue.  We were seeing what different packs looked like and I purchased one called Mizuno Craft.  Unfortunately, unlike the other packs i bought today, this pack does not load for the realm.  I am able to set it as a personal texture pack and play in the realm, however when i set it as a global resource pack it does not change the textures for myself or anyone else playing on the Realm.
I made sure to de-activate all other resource packs (excluding the default global resources that can't be removed).  I tried closing my game and re-opening. I tried loading a texture pack we tried earlier in the day and had no issues.  It's only this texture pack that it isn't letting me load on the realm.
I also attempted to apply it with a second texture pack to see if it would take priority, but this did not work either. The second added texture pack ended up being the texture pack that was in the Realm.  I did get an error message saying "some of the selected content could not be applied.
Below you will see the error message with Mizuno Craft being under "active" and a screenshot from in the game showing the textures are not updated.
I also included 2 screenshots when i select a different pack i bought "RealCW" and have it set as "Active" and the second shot is the in game update to textures.