Need advice on next steps

[gf at interlinks.net]

Hi
Everyone. I need advice. I have been working with a reporter on an old
ticket regarding Thunderbird.
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1251059
 I am not sure
what I should do next. Reporter can’t replicate original problem but
now reports same issue on a different dialog window. I changed the title
from “ "HTML Mail Question" dialog doesn't fit”   
to    “Preferences dialog window too small”
I was
able to replicate the preferences dialog window problem on my
computer.
I found a
corresponding bug report on Bugzilla (#502371). On comment number 3 in
bugzilla there was a solution was provided (edit a DPI setting). It worked
for me on my computer.  
The
reporter tried it and still has the problem.  
He is
using Mate 16.04.  I am in Ubuntu 18.04.   
 What are my next steps? Should I link this
to the Mate project? Should I just mark it as confirmed and move on?
Thanks
G
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