Currently on Version 81.0.387.0 (Official build) canary (64-bit). Starting a few days (approx. 1/7/20), a problem has developed with our Intranet site so that when we go back, forms are losing (and sometimes actually changing) values. Cannot consistently reproduce, but happens 5-10 times a day. Usually, a refresh (F5) will restore the values, but not always. Ok, now I know what is happening and yet, I have no idea why. When I click Back in Edge, and only Edge (I tested in Chrome and IE), the onchange event of a specific element fires. I can reproduce this consistently.

Isn't "back" button only supposed to take user back to the previous URL?the contents of the URL can differ, the page might even need to be refreshed to work correctly

HotCakeX Never has been a problem before. These are values saved in a database and loaded on each page load. I can't even swear it's the back button, I just know that on subsequent loads of the page, the browser appears to be changing the values of these forms. FYI, I'm the developer for this site, so I can see that the values are being loaded correctly in PHP, this is a UI only issue.

HotCakeX The issue was not "losing values", but somehow JavaScript events are firing that should have no possible way for that to occur.

HotCakeX Well, that was causing the UI issue - the JS being "cached" is an AJAX request that updates part of the page (and not doing it correctly since it should not be fired at that point). I could fix the AJAX issue to work anyway, but I need to know why it's even being called - makes no sense, but I can reproduce 100% of the time in Edge, but not in any other browser. In fact, I just tested all the channels (latest version) - the issue does not occur in Beta or Stable but does occur in Dev and Canary. If this problem makes it to Beta, we will have big problems (we have users on Beta and Stable).

Back button fires JavaScript onchange event

Keith Davis
Steel Contributor
Jan 20, 2020
Issue is resolved in:

Version 81.0.396.0 (Official build) canary (64-bit)

(maybe before, but definitely in this build)
HotCakeX
MVP
Jan 10, 2020
Isn't "back" button only supposed to take user back to the previous URL?
the contents of the URL can differ, the page might even need to be refreshed to work correctly
- Keith Davis
  Steel Contributor
  Jan 16, 2020
  HotCakeX
  
  The issue was not "losing values", but somehow JavaScript events are firing that should have no possible way for that to occur.
  - HotCakeX
    MVP
    Jan 16, 2020
    So no more a UI issue?
- Keith Davis
  Steel Contributor
  Jan 10, 2020
  HotCakeX Never has been a problem before. These are values saved in a database and loaded on each page load. I can't even swear it's the back button, I just know that on subsequent loads of the page, the browser appears to be changing the values of these forms. FYI, I'm the developer for this site, so I can see that the values are being loaded correctly in PHP, this is a UI only issue.

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Back button fires JavaScript onchange event

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