From a quick read of the upstream bug, it seems like this requires commits:
7be1420f44465a96d098a33c12c5a61dcefb14aa
a3a3b6131eb2c44b3b94df973e6edd2e4c8d2095
cde942f61bf231ea4a0d50780cdb4e744458daeb
The first 2 are in Bionic already, so as @marvin24 states in comment 1 only the 3rd should be needed.
From a quick read of the upstream bug, it seems like this requires commits: 6d098a33c12c5a6 1dcefb14aa b3b94df973e6edd 2e4c8d2095 a4a0d50780cdb4e 744458daeb
7be1420f44465a9
a3a3b6131eb2c44
cde942f61bf231e
The first 2 are in Bionic already, so as @marvin24 states in comment 1 only the 3rd should be needed.