I am opening a new thread on this issue so that the workaround/solution will be more readily available to anyone experiencing issues with some Steam games not properly opening/running after the April 8/9 update, as I did. Three of the five Steam games I run regularly were affected, so my guess is that others will run into the problem, too.
If any of your Steam games do not open/run properly after the most recent update, @Harvey has posted the workaround/solution in another thread:
Exit Steam -> launch Linux Steam Integration from your system menu -> disable "Use native runtime" (it is the first option) and close the application -> launch Steam
In my case, I also restarted Solus after applying the workaround/solution to make sure that the change "took".
Linux Steam Integration, which (according to Harvey) "allows steam / steam games to use system libraries instead of the generally older steam bundled libraries", was not updated in the April 8/9 update, apparently because the team ran into problems with one of the affected libraries. Based on @Harvey's comments, I expect that Linux Steam Integration will be updated in a week or two. Until then, the workaround/solution works.
