As mentioned by Kevin, the fix is likely that of [1]. However the backporting of [1] isn't straight forward and therefore I didn't verify a backported version of [1] fixes this issue with newton.
I'm going to assume [1] will in fact fix this issue and turn this bug into an ask to backport it. Obviously that effort will involve verifying a backported version of [1] does in fact fix this issue.
I was able to reproduce this with stable/newton.
As mentioned by Kevin, the fix is likely that of [1]. However the backporting of [1] isn't straight forward and therefore I didn't verify a backported version of [1] fixes this issue with newton.
I'm going to assume [1] will in fact fix this issue and turn this bug into an ask to backport it. Obviously that effort will involve verifying a backported version of [1] does in fact fix this issue.
[1] https:/ /bugs.launchpad .net/neutron/ +bug/1642517