The scale has changed it's behavior. The wiki page for When (Not) to Split a Two-Way Road says:
There are now 2 zoom levels that show 100m zoom. (one has the scale bar 2x longer than the previous zoom level) Can someone confirm the correct zoom level and update the wiki? I don't remember what it was in ft (maybe 200ft - not positive though)A road should be split if:
GPS tracks show a clearly definable gap (blank area) between the color-by-azimuth arrows at the 100m zoom level.
Re: Editor Version Dec 19th Official Feedback Thread