I see that there have been changes to HTML rendering in 1.346. This seems to have caused at least one regression: under Build Executor Status, I see for example

BuildingNB-Core-Build #4033

rather than the expected

Building NB-Core-Build #4033

I am guessing that this is the issue (lib/hudson/executors.jelly):

${%Building}
<!-- XML... -->
<a href="...">${...fullDisplayName}</a>&#160;<a href="$...">#${....number}</a>

If you turn off ignorable whitespace processing, then no space appears between "Building" and the job name. Using a nbsp is not a good idea here for layout reasons, so perhaps

${%Building} 

is needed?

There might be other places with the same regression - can the regression be fixed at its source (Stapler?) for better compatibility, especially with plugins?