After renaming a modular storage block on an anvil, tried the vanilla one as well as the Dark Steel Anvil, the block resets to "Modular Storage" when placed. Before placing the block, it shows the new name I gave it in inventory, but resets to the default name as soon as I place it.

Playing on FTB Beyond version 1.11.0 Minecraft version 1.10.2

Edit: Added version information.