This question about disc projections has a link to an animation of a Reuleaux triangle spinning inside a square.

"That sounds cool, I want to see what that looks like!", I thought.

Unfortunately, the link was dead, but through the internet archive I was able to track down the original animation, and find a modern location for it. (It can be found here: https://upload.wikimedia.org/wikipedia/commons/6/65/Reuleaux_triangle_Animation.gif)

Succeeding in finding the animation, I thought I could make a quick edit to the post updating the dead link.

Unfortunately, when submitting my edit, the following appeared:

So it appears that some validation limits have changed since the question was originally posted, making it impossible for me to update the link without shortening the title (which would be very intrusive).

What's the best course of action to take in this case?

• An SE staff member Yaakov Ellis has mentioned on Meta Stack Exchange that 'if you try to edit the text on a legacy post with len(Title) > 150 then the edit will have to bring it under 150. We do not have code in their [sic] to allow the "too-long-title" status to be grandfathered in.' Jul 12 at 7:32
• I took the liberty of implementing your edit (the Reuleaux triangle spinning inside a square) with a slightly shortened title (149 characters). Jul 12 at 19:58