Strange...

I'll chase this up for you!

ExecutiveSchmid

For clarification upon entering a F2P:

I cannot enter anything into the chat

I cannot use any of my keybinds

I cannot use quickchat

One of my ability bars will disappear

Some of my abilities will disappear and the icons will have no transparency regardless of UI transparency

All of this is reverted upon changing back to a members world.

Thanks for the specific issues listed, I've also sent this over for you!