URL: https://www.pasmo.co.jp

Browser / Version: Firefox Mobile 57.0
Operating System: Android 7.0
Tested Another Browser: Yes

Problem type: Design is broken
Description: In some occasions, navigating back and forth at the site causes the website to be zoomed in yet not resizeable
Steps to Reproduce:

1. Visit the site at https://www.pasmo.co.jp or the English version of the site at https://www.pasmo.co.jp/en (visiting https://pasmo.co.jp will trigger a 'Server Not Found' error)
2. Click any in-site link (such as the FAQ page) on the website.
3. Return back to the previous page by using the browser's Back button.
4. This bug is not always occur; please repeat the steps if the bug is not reproduced.

Technical Information:

• It seems that the desktop version of the website is loaded first before mobile; this can be clearly seen when reproducing the steps at Chrome 62 on Android.
• The website zoom cannot be reset mainly due to the Viewport meta tag set on the website.
  

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