On a 2.8.5 installation we were able to trigger
#2034 without a background merge ongoing.
from the access log:
<ip> - - [24/Jul/2014:17:00:17 +0200] "POST /review/changes/5596/revisions/f86150a2e1c1794c739601e54e55f325ee181dd5/submit HTTP/1.1" 200 48
<ip> - - [24/Jul/2014:17:00:17 +0200] "POST /review/changes/5596/revisions/f86150a2e1c1794c739601e54e55f325ee181dd5/submit HTTP/1.1" 200 48
A broken mouse was firing clicks much too fast.
Maybe the buttons should get a debouncing in js to avoid unneccessary data trasnfer and processing in general?