Hi,
Possibly same issue. just updated metabox and 1 (out of 2) views the CSS is simply not being output. The other view is still working fine strangely.
There was a warning (missing rbrace) in the css not rendering for the line
grid-template-columns: repeat(auto-fit, minmax(279px, 1fr));
but it was working previously. As other view CSS was still outputting I thought could be due to having the warning on it that you now block the css, but commenting out the line seems this is not the case.
For now rather than roll-back I've simply prefixed all css in the view with a container class and have added it as a new css file being pulled into the child theme.
Thanks,
Tim