Built a website using the experimental Mobile First CSS breakpoints. Started with 1.5.1, and the sticky header options worked fine. However, upon installing 1.5.3 the options disappeared, and with some tinkering it’ll reappear, disappear, etc.
Was hoping it was resolved in 1.5.4, so I installed it, and the options disappeared again. The options chosen before the upgrade still work. It’s just that I can’t change them anymore.
Cloned the site, downgraded to 1.5.2, and the options reappear.
1.5.4 with nothing changed - Header options normal
1.5.4 with custom breaks enabled (but no changes) - Normal
1.5.4 with custom breaks enabled, and a new large breakpoint added - Normal
1.5.4 with custom breaks enabled, and mobile first - Options missing.
1.5.4 reverted to desktop first, and custom large desktop break still added - Normal.