Parts of email messages are invisible
My email application is zmailcloud.com from Cloudiance. It has worked fine for me for years using Firefox. However, in the last week or so, when I open an email message, I cannot see anything but empty "From"and To" fields. Nothing is in the body of the message, either (see attached screenshot). But, if I open a reply or forward message, everything in the original message appears normal (see other screenshot). This problem does not occur using Micrsoft Edge, only Firefox. Anyone have any suggestions???
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Thank you for providing screenshots, wish more users did the same! ;-)) I see several add-ons, did you try with Firefox in Troubleshoot Mode? What security software are you running?
由 jonzn4SUSE 於 修改
You can check for issues with Total Cookie Protection.
- https://support.mozilla.org/en-US/kb/total-cookie-protection-and-website-breakage-faq
- https://support.mozilla.org/en-US/kb/introducing-total-cookie-protection-standard-mode
You can try these steps in case of issues with webpages:
You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.
- hold down the Shift key and left-click the Reload button
- press "Ctrl+F5" or press "Ctrl+Shift+R" (Windows,Linux)
- press "Command+Shift+R" (Mac)
Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings), click the padlock icon (Clear cookies and site data) for the domain in the selected tab.
"Remove the Cookies" for websites that cause problems:
- Settings -> Privacy & Security
Cookies and Site Data: "Manage Data"
"Clear the Cache":
- Settings -> Privacy & Security
Cookies and Site Data -> Clear Data -> [X] Cached Web Content -> Clear
- https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox
- https://support.mozilla.org/en-US/kb/how-clear-firefox-cache
Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.
- switch to the Default System theme: "3-bar" menu button or Tools -> Add-ons -> Themes
- do NOT click "Refresh Firefox" in the Troubleshoot Mode start window
- https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode
- https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems
You can check for issues with Enhanced Tracking Protection and Total Cookie Protection. Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content.
- click the shield icon for more detail and possibly disable the protection
You can check the Web Console for relevant-looking messages like about blocked content.
Thank you both. The problem was the Bitwarden password manager extension. I don't know how to fix that, but I have informed Mozilla and will inform Bitwarden.