After updating to 16.41, I no longer am able to select Creative Mode items from the crafting menu because there is no creative tab to select from. The items I already had in my inventory are working great. Let me know if you need anything else to replicate.

Known bug; caused by a conflict with mods that call reset_technology_effects() (ie: bobplates), simply open the Creative Mode menu, Cheats -> Team Cheats -> Creative tools' recipes On. Alternately can use the remote.call functionality to disable/re-enable Creative Mode.

The underlying problem is that access to the creative mode items is controlled by a hidden research, and mods that call that function cause the hidden research to become unresearched, as it's not normally researchable and thus a candidate for the game to reset. CM uses the state of that research to determine enabled/disabled state instead of storing a value -- this means that I can't just implement on_technology_effects_reset to fix it without rewriting a bunch of internal things.