Error
TypeError: searchOptions[this.currentTab] is not an Object. (evaluating 'key in searchOptions[this.currentTab]')
at https://commons.m.wikimedia.org/w/load.php?lang=en&modules=jquery%7Cwikibase.mediainfo.mediasearch.vue&skin=minerva&version=1s3fi:206:475 at onPopState https://commons.m.wikimedia.org/w/load.php?lang=en&modules=jquery%7Cwikibase.mediainfo.mediasearch.vue&skin=minerva&version=1s3fi:206:450
Impact
Error seems limited to Mobile Safari on iOS.
Roughly 50 occurrences per day, seems more or less constant over the last few weeks.
Notes
This seems to be happening inside the clearFilterQueryParams in App.vue, but the outer layer of the callstack is the onPopState handler. This implies that some previous history state is not being stored correctly when the user navigates "back" to a previous search state.