Open Bug 1680414 Opened 3 months ago Updated 3 months ago

When clicking rapidly in Responsive Design Mode, Firefox adds an extra click


(DevTools :: Responsive Design Mode, defect, P3)

Firefox 83


(Not tracked)


(Reporter: tylergross28, Unassigned)


(Blocks 1 open bug)



(2 files)

Attached file index.html

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:83.0) Gecko/20100101 Firefox/83.0

Steps to reproduce:

This is a weird one. This only happens in Responsive Design Mode. Open up a page in Responsive Design Mode, then, on a page with a button, click rapidly (rapidly being the most important part!) twice.

Actual results:

When using Responsive Design Mode, if you click 2 times rapidly in succession, Firefox will count 3 clicks.

Expected results:

Firefox should have registered 2 clicks instead of 3.

I tried this on two different Macs in Big Sur if that helps, but did not try on Windows.

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Component: Untriaged → Responsive Design Mode
Product: Firefox → DevTools
Severity: -- → S3
Priority: -- → P3
Blocks: rdm-touch
Ever confirmed: true

This is related to touch simulation. If the feature is disabled, clicks seem to be counted accurately.
The toggle for touch simulation is found at the top of the toolbar of the Responsive Design Mode panel.

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