running version 2026.02.16 (git 4d6c9b89) on a M1 Ultra Tahoe 26.3 From time to time openscad seems to ignore the show only (!) directive. I wonder if anyone else has noticed this inconsistent behaviour. It’s difficult for me to track down as I am working with a very large program and of course simple sample coding exercises seem to work just fine. Just asking to see if anyone has encountered the same problem, or if perhaps the behaviour of ! has been redefined and I just missed the cable. :) I’m also encountering execution of a preview will pop the display into perspective view, The view selection does not change, it still shows as orthogonal. The work around is simply to select perspective and then select orthogonal but that doesn’t strike me as ideal. Unfortunately the behaviour is inconsistent so there’s not much point in me submitting a bug report to github, but if others are experiencing the same behaviour then a vague “doesn’t work” complaint may draw the attention of the hard working coders who make openscad possible. Both of these issues have been around for at least a couple of weeks, it’s not like they just showed up in 2026.02.16 Thanks Hugo

On 2/19/2026 5:25 PM, Hugo Jackson via Discuss wrote: > From time to time openscad seems to ignore the show only (!) directive. I wonder if anyone else has noticed this inconsistent behaviour. It’s difficult for me to track down as I am working with a very large program and of course simple sample coding exercises seem to work just fine. Just asking to see if anyone has encountered the same problem, or if perhaps the behaviour of ! has been redefined and I just missed the cable. :) The behavior has not been redefined. Make sure that you don't have more than one thing marked with an !.  Doing so should probably yield a warning... but doesn't. > I’m also encountering execution of a preview will pop the display into perspective view, The view selection does not change, it still shows as orthogonal. The work around is simply to select perspective and then select orthogonal but that doesn’t strike me as ideal. Unfortunately the behaviour is inconsistent so there’s not much point in me submitting a bug report to github, but if others are experiencing the same behaviour then a vague “doesn’t work” complaint may draw the attention of the hard working coders who make openscad possible. I haven't noticed that happening, but I haven't been using the program heavily in the last few weeks. My opinion is that for both of those it would still be good to file an issue.  Just because it's intermittent doesn't mean it isn't real.