1) Load https://marketplace.firefox.com/ 2) Immediately press the "All Categories ▾" link 3) Notice the categories appear, but then after a second, the categories disappear The template for the category drop-down is likely getting re-rendered, which is why when you click it, shortly after it toggles back. This is very similar to bug 1030875.
Don't think I can repro this anymore?
Status: NEW → RESOLVED
Last Resolved: 4 years ago
Resolution: --- → INVALID
Resolution: INVALID → WORKSFORME
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