That's good to know, I was not aware of that. The "show all" feature is cool, but it often triggers the cloudflare page.
Yes cloudflare is an issue. To the extent of my knowledge, all leading cdn's would be triggered on the same issue. I ran into this problem when trying to implement a similar "show all" feature on a flarum based forum. Another dev did confirm that Akami, Fastly, Amazon CF all were triggering the warning page. It wasn't a real hindrance to workflow just a bit annoying.
The search function here is famously broken for quite some time. I try to make do with whatever I want to search by using google search by using "bitcointalk.org" in quotes. It usually works. When I have to search my inbox I try to use common vowel letters. That usually pulls up the required content almost 9 out of 10 times.