190776 2018-10-20 14:17:03 -0700 [iOS][WK1] Spelling correction dots do not show unless you focus editable content and then defocus it 2018-10-20 14:22:39 -0700 1 1 1 Unclassified WebKit WebKit Misc. WebKit Local Build iPhone / iPad iOS 12 NEW https://bugs.webkit.org/show_bug.cgi?id=188762 InRadar, PlatformOnly P2 Normal --- 1 dbates webkit-unassigned rniwa webkit-bug-importer wenson_hsieh oldest_to_newest 1471118 0 dbates 2018-10-20 14:17:03 -0700 Consider a page with the following markup [[ <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width"> <style> p { border: 1px solid black; height: 300px; width: 200px; } </style> </head> <body> <p id="test" contenteditable="true"></p> <script> let test = document.getElementById("test"); test.focus(); document.execCommand("InsertText", false, "the the mispelled"); document.execCommand("InsertText", false, " "); // Trigger spelling and grammar checking </script> <button>Spell check</button> </body> </html> ]] If you focus the editable field we do not show spelling correction dots. If you type more misspelled words we also do not show spelling correction dots. (Notice that tapping "mispelled" turns it red and shows a callout with suggested replacements. (*)) If you click Done to dismiss the keyboard we do not show spelling correction dots. We only start showing spelling correction dots if you focus the editable field then click "Spell check". This bug was mentioned in <https://stackoverflow.com/questions/46347640/how-to-make-the-spellcheck-work-on-uiwebview>, <https://stackoverflow.com/questions/49274812/spellcheck-is-not-working-in-uiwebview-ios>, and <https://stackoverflow.com/questions/7927605/how-to-activate-spellchecking-for-a-contenteditable-div-in-a-uiwebview>. (*) Raised in <https://stackoverflow.com/questions/25440134/spellcheck-for-input-in-uiwebview-is-stopped-working> 1471119 1 dbates 2018-10-20 14:20:44 -0700 Unlike on Mac, we disable continuous spelling checking on iOS in a newly instantiated WebView at <https://github.com/WebKit/webkit/blob/222dd8822aaf985a0a3314297905cb8781605192/Source/WebKitLegacy/mac/WebView/WebView.mm#L5512>. We then use some-kind of heuristic to decide when to trigger spell checking. 1471120 2 webkit-bug-importer 2018-10-20 14:22:39 -0700 <rdar://problem/45433889>