While the following workaround does function temporarily for users with less than 100 reputation, as noted in this post, it's best not to rely on it long-term. If you have at least 100 reputation, consider using the chat-based image upload workaround instead.
That's a very important point. This issue really needs to be addressed as soon as possible — users, especially those with less than 100 rep, are already turning to external image hosts like Imgur just to get their questions posted. If this continues, we'll likely end up with a large number of posts missing images in the future once those external links break or expire. Time is of the essence if we want to preserve the quality and integrity of content across the Stack Exchange network.
Confirmed: this issue affects all Stack Exchange sites. In the meantime, here’s a simple workaround for those who aren’t aware: Manually upload your image via imgur.com/upload. After uploading, right-click the image and select Open image in new tab
Copy the direct image URL, in my case:
https://i.imgur.com/4ei46kq.png Edit your question and embed the image using the following Markdown format (as shown in the red box):
[![screenshot][1]][1] [1]: https://i.imgur.com/4ei46kq.png 
