"Fix u-turns, reverse connections, dead-end and unterminated roads" button does not behave as self-described.
It appears to fix reverse connections and unterminated roads, but doesn't seem to touch the u-turns.
You're right, it's not a bug, I just forgot to remove u-turns from the description. The autofix of U-turns has been removed some months ago, because U-turns are not considered anymore as a bug, and might be wanted. So you can now display them, but not mass-fix them.
doctorkb wrote:ALSO: when using this function, it would be great if it stopped at 150 edits and then said "save, and repeat". I've been getting errors when saving with too many edits.
That's already the case: when the counter of edits is > 150, you can't use this function until you save.