Summary
There's some special cases where the store have a link to a page in which is passed a special character like '#' to pass a property, for example, the item color, which causes the PDP not to load on the first time, instead it keeps on trying to load, but when the page is refreshed it does load correctly.
This behavior should not block the page to load due to some configurations the store can made, such as, to display the colors of a product in search pages.
Simulation
Check for a store that have a configuration like color set on the search settings to be splitted and them go to the search page of some product and reach the PDP from it, if the property is passed on the URL it will crash due to the link created.
Workaround
Currently the store can remove the split on the search side.