No exact repo here. It's definitely slow for me on the tags you mention. I know the searching system has timeout. And if it goes over that timeout, you'll get a blank page/no results.
Ah it was intermittent. It seems to be back working now. Leaving it up as documentation. Popular myth has it that tag search only suffers on Saturdays. Increasingly I find this to be untrue
I had an intermittent 0 result page (happened once a few seconds ago) but I was not doing a tag-based search. I was just refreshing the active question tab on meta. Refresh, and poof: all the questions are gone. (Like in the screenshot above.) Refresh again, and poof: all the questions are back.
Heh - I searched before posting my dupe. In the time it took me to grab quick screenshots and type the question a few others have already mentioned it.
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active
question tab on meta. Refresh, and poof: all the questions are gone. (Like in the screenshot above.) Refresh again, and poof: all the questions are back.