Custom Entity Models Are Invisible But You Can Interact With Them !

Dear Mojang,

I Created An Add-on With Some Entities In It . Unfortunately , All Of Them Are Based on In-Game Models,Why ? Because Entities With Custom Models Dissapear But They Are Interactable (means That You Can Trade , Kill , Tame & Ride Them) , But For Some Reasons Other Add-ons Don't suffer from that problem . I Found So Many People On Reddit That Have The Same Problem But No Fix Was Found .

NOTE : I Use Blockbench To Make Models & Geometries.