193281 2019-01-09 07:24:50 -0800 PDF content disappears and turns grey in WKWebView after view controller switching on iOS 12 2023-06-27 12:31:02 -0700 1 1 1 Unclassified WebKit PDF Other iPhone / iPad iOS 12 RESOLVED INVALID InRadar P2 Normal --- 1 jdarcangelo webkit-unassigned aestes jtudruj ocannal simon.fraser thorton webkit-bug-importer wenson_hsieh oldest_to_newest 1492943 0 jdarcangelo 2019-01-09 07:24:50 -0800 If you load a PDF in a WKWebView on iOS 12, it will display and everything works as expected until you switch view controllers. Upon returning to the view controller with the WKWebView, the PDF content will disappear and turn grey, however, the scrolling and page counter will still be present even though the PDF content is not. We are experiencing this bug in Firefox for iOS on iOS 12, but this Stack Overflow post is also describing our exact issue: https://stackoverflow.com/questions/52735158/wkwebview-shows-gray-background-and-pdf-content-gets-invisible-on-viewcontroller 1492967 1 webkit-bug-importer 2019-01-09 09:14:26 -0800 <rdar://problem/47148038> 1493453 2 ap 2019-01-10 14:09:56 -0800 Thank you for the bug report! It's been determined that this issue is in a system component below WebKit, so closing as INVALID. This will continue to be tracked by Apple internally. 1493517 3 jdarcangelo 2019-01-10 15:49:55 -0800 (In reply to Alexey Proskuryakov from comment #2) > Thank you for the bug report! > > It's been determined that this issue is in a system component below WebKit, > so closing as INVALID. This will continue to be tracked by Apple internally. No problem. Thanks for taking a look! 1729934 4 ocannal 2021-02-16 14:17:23 -0800 This is still an issue on WKWebView, do we have any info about the internally tracked issue? 1963754 5 jtudruj 2023-06-27 02:25:17 -0700 The bug still appears. Checked on iOS 16.5.1 and below. 1963870 6 simon.fraser 2023-06-27 12:31:02 -0700 Please file a new bug with specific instructions to reproduce.