I just edit an answer of mine, using "Added another possible solution" as reason.
Right after submitting (within a minute, or so) I noticed, that my addition has a typo (was missing a word), so I re-edited to fix it, using "Fixed typo" as reason.
The revision history now only shows the last reason. The previous one is somehow lost in space and now the reason doesn't match the changes at all.
There seems to be no warning that re-editing in a short timespan will update the previous revision instead of creating a new one.
Shouldn't there be at least some kind of hint that this will happen?