When I try to open https://www.wikidata.org/w/index.php?title=Q183&oldid=190300756, Firefox gives me a "Script not responding" error. In Chrome, the page opens very slowly.
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Now can't reproduce with above URL, but same problem with
https://www.wikidata.org/w/index.php?title=Q183&oldid=190300756?setlang=de.