09:55 < stgraber> that test takes a while so it's done using the _async function in ubiquity which means it can take up to 4-5s before the warning shows up or disappears
So the warning probably would have disappeared if you had been more patient. ;-)
Additionally, a check may also be done when switching fields hence it sorting itself out.
Discussed in #ubuntu-installer:
09:55 < stgraber> that test takes a while so it's done using the _async
function in ubiquity which means it can take up to 4-5s
before the warning shows up or disappears
So the warning probably would have disappeared if you had been more patient. ;-)
Additionally, a check may also be done when switching fields hence it sorting itself out.