Please fix the Post button location for new posts creation for Mobile view. It is going outside - mobile view.

ps. there are many small details that could be improved for Mobile view (including Dark Mode where some elements have colors from the Light mode).

ps. option to consider: ability to move post to other Space when Editing the post (this feature can be available to all users or for the Admin/Manager). In this case the Spaces drop down list could be move down and the Post button could be moved left.