[Tilesathome] construction=yes causes black tiles

[Ed Loach]

I'm not sure whether it is related, but one of the changes made to JOSM in the last 24 hours (rev 1327) had this note next to it:
"remove construction=yes, this is not supported by existing renderers and therefore will lead to confusion"
I'm assuming this means from the presets, as I think you can still add your own keys manually.

In the case of Tiles at Home though, if it is causing a problem then it looks like it is trying to support it in some way.

Ed