Cannot start Warcraft3 while running

after a recent lutris update (from before 0.5 to after 0.5), I cannot run battlenet via the ‘play’ button and Warcraft3 via “run exe inside wine prefix” anymore.

Investigating this showed that with the current version of lutris, I cannot (in general) execute two programs in parallel within the same prefix using lutris.

This used to work before the update (ubuntu repository appears to have been updated recently).

Link to log:
Link to lutris-issue:

Thanks for your help.