GUI-Binded Inventory Problems

• If I bind a GUI to an entity, it won't "tick-update"/load its inventory until I open once the GUI each time I join the world.
• I have a simple procedure that checks the presence of specific items in specific slots (saddle slot, armor slot) of an entity's inventory and changes the texture based on the presence or the absence of those items. This can't work until I open once the related GUI of the entity each time I join the world.
• If I unbind the GUI from the entity I don't have this problem, the inventory instantly tick-load because the texture gets updated instantly. However I can't have the GUI.
• I was and I actually am working with the 2024.2 version, however I got this problem after the last patch/update, before that patch/update everything worked properly.
• I'm acutally using GeckoLib and Attributes(Nerdy's 2024.2 version) plugins. I'm working with GeckoLib entities, but I guess this isn't the problem.

Glad if someone can help.