www.costco.ca - Size selection boxes intermittently fail to display on the product page

[webcompat-bot]

URL: https://www.costco.ca/.product.4000393825.html

Browser / Version: Firefox 148.0
Operating System: Mac OS X 10.15
Tested Another Browser: Yes Safari

Problem type: Design is broken
Description: Items not fully visible
Steps to Reproduce:
works fine on Safari - shoe sizes appear

View the screenshot

Browser Configuration

• blockList: basic
• channel: release
• defaultUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:148.0) Gecko/20100101 Firefox/148.0
• gfx.webrender.software: false
• hasTouchScreen: false
• frameworks: {'fastclick': False, 'marfeel': False, 'mobify': False}
• mixed active content blocked: false
• mixed passive content blocked: false
• tracking content blocked: false
• btp has purged site: false

View console log messages

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[b-farkas]

Thanks for the report. I was able to reproduce in firefox-nightly, and firefox-release.

Reproducible issues are moved to our Bugzilla component; please see: https://bugzilla.mozilla.org/show_bug.cgi?id=2021529

Closing as moved.

[qa_09/2026]