I use older Android versions so the native Cast Screen button has never really worked for me with Roku devices.
I do use Web Video Caster and also Castify. These are both available in the Play store and you may want to try them out. They have advantages and features over the Android Cast (ie. able to cast web sources and well as local file sources).
With both the above, you install the accompanying Receiver channel/app on your Roku device and then the casting app (Web Video Caster or Castify) on your mobile device. Both of these tested and are working with OS 11.5. My personal preference, however, is Web Video Caster.
At least the above will give you some options while exploring what the issue is with the native Cast Screen.
Roku Community Streaming Expert Just another Roku user... I am not a Roku employee. Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102
Can you please provide us with a photo of the issue you are seeing on screen? In addition, can you please provide us with the exact steps to reproduce the issue you are experiencing so we can better understand the issue?
With more detailed information, we will be able to assist you further.
Re: After recent update to use zip code.... I can NO Longer Screen cast from my tablet
I use the app called Klede. If you have a subscription you have the ability to utilize the native cast button to I presume use what is called the "Play on Roku" function. After the update of November 1st 2022, it no longer works. I'll press native cast button, I'll press the name of my TV, my TV will start like it normally would for a brief second, and then immediately stops.
Re: [OS 11.5] After recent update to use zip code.... I can NO Longer Screen cast from my tablet
I've went through pretty much all of the settings that the Roku TV has, as I too have fall victim to this new stupid update and casting my favorite streaming app. Nothing helped. So the movie streaming app that I use "KLEDE", must have recognized that I needed an alternative casting option. It offered me two I will say that the "Caster" app is probably the best way to go. You download an app on your TV, you download an app on your phone the "Caster" app, and you just hit cast and it'll cast whatever you're trying to cast.