So I guess RTL is like a mirror, instead of starting from the left, everything starts from the right, no exceptions. I'll bear this in mind when I get round to Welcome 2.0 (it will be months before this is ready). How the styling is put together (like the Ubuntu MATE logo) definitely influences this.
also is the Installation setup part of regular Ubuntu Or MATE?
The installation screens are part of Ubiquity, which is Ubuntu.
MATE desktop is shared by many distros:
Until then i'll Keep Making Translations for the 'Welcome' Program.
The next major version of Welcome will be a disruption to translators, since many strings may need re-translating (as the original text will eventually be merged together), but till then, contributions will be seen by users of today's version when it is synced.... just backwards.