Thanks, I’m sorry we’ve still not gotten this one addressed. This won’t be fixed in the next patch and is providing troublesome to solve. It happens anytime you go back to the exact same value. Responsive styling is setup to only adds media queries if two breakpoints have different values for the same CSS selector. Because the row actually introduces a new selector when the number of column changes, it doesn’t realize a new media query is needed and assumes the value stays the same. I haven’t found a clean way to address it just yet.
This is a bit convoluted, but there is a workaround in the meantime. Just make sure the two values are technically different. calc(100%) is treated differently than
100%`so that should be enough to cause responsive styling to output the next media query.