https://github.com/matrix-org/matrix-react-sdk/pull/8747 made it more evident that the host signup dialog was relying on some quirks in how PersistedElement sizes and positions things that it probably shouldn't have been relying on. As far as I can tell, this dialog doesn't *need* to be a PersistedElement at all since it's mounted manually as part of LoggedInView, and so it doesn't look like there's any way for it to unexpectedly disappear on the user.
According to Travis this is supposed to be a bespoke widget in a proper dialog, but this is intended as a more short-term fix.
Ensure dialog borders are always white as the HostSignupDialog
does not yet support dark mode or theming in general.
In the future we might want to pass the theme to the called
iframe, should some hosting provider have that need.
Need to make things configurable, image and text for the first step should be configurable.
Also missing privacy related words, though they should be configurable too.
Robin