Also, did you change the theme of the browser recently?

(ie., generally throughout the internet?) Part of embedded tweet messages on DU?

If it is DU only, perhaps you could point to a few posts where that has occurred.

First thing to check, though is your blocking add-ins and antiviral/antimalware programs that may be blocking the links. That is especially true if a major update of your browser, the ad-block apps or your anti-viral/anti-malware software has occurred recently.

so far it seems to be tweet links in DU. I'm using Chrome. At first the links showed but did not load the tweet. Now the link quickly disappears.

I fired up Microsoft edge and the links are OK.

Following.

and the link disappears with Chrome....I just checked. I did not change anything with my settings, etc. BarbaRosa, I don't think we're the only ones with this issue.....

Along with checking any add blocking software, check to see if it or you inadvertently turned off your java script. You'll usually find it in your settings under security, advanced or downloading in your browser.

I'm using DuckDuckGo. In the upper right corner is DDG Privacy Essentials button, press it, at bottom of that screen is a Manage Whitelist link that takes you to a new screen, there you find a Show Embedded Tweets option, turn it on.

That seems to have taken care of the problem.