We encountered an issue within the VAULT search with slop factor 0 (maybe the same with higher slop factors), when certain search strings are used.
The following search strings within a multiple property search on a folder with 80 elements caused the IIS to stop and only an IIS reset solved the issue.
Test cases:
*DEV0* ==> IIS stop
*dev0* ==> IIS stop
*v0* ==> IIS stop
*dev* ==> OK
*0* ==> OK
*1* ==> OK
*v1* ==> OK
*dev01* ==> OK
*v01* ==> OK
A possible solution would be a pre-search hook where the search string could be modified before the execution.
In general such pre / post method hooks would be convenient in multiple scenarios like file drop or file click in VAULT.