I use the forum on Edge and (so far) have not ran into this issue. Here’s my errors/warnings.
Summary
Errors:
ARIA attributes must conform to valid values: Invalid ARIA attribute value: aria-hidden=""
<section tabindex="-1" id="discourse-lightbox" aria-hidden="" class="d-lightbox">
<!----></section>
Certain ARIA roles must contain particular children: Required ARIA children role not present: group, option
<summary aria-label="Filter by: unpinned" name="Filter by: unpinned" data-name="unpinned" data-value="false" tabindex="0" role="listbox" id="ember531-header" class="select-kit-header single-select-header dropdown-select-box-header btn btn-icon-text btn-default ember-view">
<summary aria-label="Filter by: tracking" name="Filter by: tracking" data-name="tracking" data-value="2" tabindex="0" role="listbox" id="ember534-header" class="select-kit-header single-select-header dropdown-select-box-header btn btn-icon-text btn-default ember-view">
<summary aria-label="Select a value to filter" name="Select a value to filter" data-name="" role="listbox" id="ember543-header" class="select-kit-header single-select-header dropdown-select-box-header btn no-text btn-icon ember-view">
<summary aria-label="Select a value to filter" name="Select a value to filter" data-name="" tabindex="-1" role="listbox" id="ember550-header" class="select-kit-header single-select-header dropdown-select-box-header btn no-text btn-icon ember-view">
Form elements must have labels: Element has no title attribute Element has no placeholder attribute
<input id="file-uploader" accept=".jpg,.jpeg,.png,.gif,.heic,.heif,.webp,.avif,.webm,.mp4" multiple="" type="file">
Compatibility
The 'viewport' meta element 'content' attribute value should not contain 'minimum-scale'.
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, user-scalable=yes, viewport-fit=cover">
The 'viewport' meta element 'content' attribute value should not contain 'user-scalable'.
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, user-scalable=yes, viewport-fit=cover">
Warnings:
Accessibility
ARIA tooltip nodes must have an accessible name: Element has no title attribute
Compatibility
'meta[name=theme-color]' is not supported by Firefox, Firefox for Android.
<meta name="theme-color" media="(prefers-color-scheme: light)" content="#ededed">
<meta name="theme-color" media="(prefers-color-scheme: dark)" content="#333639">
Performance
A 'cache-control' header contains directives which are not recommended: 'must-revalidate'
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Cache-Control: must-revalidate, private, max-age=0
Security
The 'Expires' header should not be used, 'Cache-Control' should be preferred.
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
expires: 0
The 'Pragma' header should not be used, it is deprecated and is a request header only.
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache
pragma: no-cache