I do not have the slightest idea. I have been creating sidewalks and buildings and saving each 15-30 minutes into the same changeset. Now I've looked at it (e.g. this building's history osm.org/browse/way/119774652/history) - all points are from 15:33 and the building outlines were saved both 15:33 and 15:55 (I've then somehow removed the first outline).

Thanks, I've corrected it.

(And I'd very like to know why/how it happened. But possibly not even ....... knows?)

Glad to be able to help. At least that, what I've described, could not be reproduced again. (Some sort of missing null pointer check? (I'm just thinking loud.))

No, fortunately not, I still do like OSM's idea.
And the bug (at least the one I was able to describe and reproduce) was immediately fixed!!

Please check Ticket #3836 fore more details. (I keep fingers crossed for desinsecting the bug(s) soon).

OK, folks, I'm trying to insert a new ticket into OSM's trac describing one (of possibly more) reproducible way, how to get such faded-out screen, without getting our valuable edits saved ;-)

I'm also regularly getting this Potlatch2 lockup (grrrr!!) Sometimes I notice that clicking any node or way does not change their description bar at the left side (and then immediately press Save), but sometimes it is already late.

It happens at least on my each second edit (1-2 hours of work). And as I do not like to save "unfinished partial work"... On two different machines with Chrome browser.