Same issue with me. Panasonic TV with Fire Stick 2nd gen. Broke the switch input (using navigate up - enter) after last update. Amazon please fix it!!
Hello PG Wodehouse!
Welcome to the forum! We apologize for the issues you're having with the switch input on your smart TV. We’ve reported this to our technical team and hope to update you soon with a resolution to the problem. Thanks for your patience while we look into this.