Just not able to share specific windows of apps while sharing screen in google meet/discord/etc.. The option just doesn't show up and even if it does, like in google meet ("present something else") as you can see below, the button still defaults to full screen sharing.
The above prompt should be shown while sharing a screen like safari. This doesn't work as of now and so it always defaults to full screen sharing. This is a very critical bug in my opinion and many users won't be able to deal with this.
macOS Sequoia 15.1 beta 3, Orion Version 0.99.128.2.1-beta (WebKit 619.1.11.111.2)
Sequoia (15)