For my own link test, click here
for a link to Google.
It worked for me.
I'm not aware of anyone else encountering this issue. Have you tried any of the simple things like logging off/on, deleting your cookies, etc.?
Before anyone can begin to address your problem, more information is needed like for starters:
What web browser are you using?
What type of device? Windows (Version?) or Mobile (Android? iOS?)
Have updates to the any of the above been applied recently?
When you click on the Insert Image icon, do you have the same results?
Don't be afraid to add any other information that could be helpful.