Hey Simon 1. I test with iOS 9.3.1 Safari,OS X 10.11.4 Safari,Safari Technology Preview and WebKit Nightly 2. Activate private mode 3. https://netto.de 4. Tap (Marktsuche), in search bar (Suche), enter (Berlin) 5. You can see: Find businesses not working/no results Rendering issue? Note: Firefox OS X in private mode no issue. Hardware: iMac 27 inch mid 2011 AMD Radeon HD 6970M 1024 MB 3,1 GHz Intel Core i5 8 GB 1333 MHz DDR3 OS X 10.11.4 Safari Version 9.1 (11601.5.17.1) Safari Technology Preview Release 3 Webkit Nightly (r200167) iPad Pro 9,7 inch iOS 9.3.1 Safari (BuildID: 13E238)
The page uses localStorage, so could be due to Safari blocking it in private browsing mode (see bug 157010). If this is indeed the cause, then this is more of a website bug than a WebKit bug. But it's just a guess, I didn't investigate deeply.