Hi John,
We are not aware of any link related issues, so this is something new.
However I was not able to replicate it. I only have an iphone 6 and 5s at the moment for testing, but it should not matter, as the safari browser is always the same across all iphone device versions.
I tried exactly as you described, but clicking on the link takes me to the https://www.giggaff.com/venue/no-sign-bar/ page every time. Unfortunately the video was not uploaded, as there is a file size and extension limit for security reasons. You can still upload it to youtube or streamable if you want to.
I tried to check via the mobile console to see if there is any error or overlaying element, but everything seems to be clear there, no errors, no overlaying elements. nothing unfortunately. Does this issue happen on any other result, or only this one? Can you please try different searches to make sure? Thank you!