When building with debuild on 18.04 I can confirm it does not work.
I also tested my steps from #2 with "./configure --prefix=/usr/local" (no --enable-appindicator) and it works fine.
When building with debuild on 18.04 I can confirm it does not work.
I also tested my steps from #2 with "./configure --prefix= /usr/local" (no --enable- appindicator) and it works fine.