objective c - WebKit WebView paste: fails for dynamic UTIs -

when copying url chrome on osx , pasting editable webkit webview, nothing gets pasted.

i verified there items on nspasteboard , nspasteboarditem has following types:

"dyn.ah62d4rv4gu8zs3pcnzme2641rf4guzdmsv0gn64uqm10c6xenv61a3k", "dyn.ah62d4rv4gu8yc6durvwwaznwmuuha2pxsvw0e55bsmwca7d3sbwu", "public.utf8-plain-text", "dyn.ah62d4rv4gu8yg55wqzkgc65yqzvg82pwqvdg22p0r73fk8puqyuda8b1gy5xerwdgk2a", "dyn.ah62d4rv4gu8yg55wqzkgc65yqzvg82pwqvdg22p0r73fk8puqyuda8b1gy5xerwdg3cu" 

i understand these auto-generated , map weburlswithtitlespboardtype.

on performing same operation safari webview, works since contains

"public.utf8-plain-text" 

is there known workaround handling these utis better?

webkit webviews don't seem support paste operations dynamic utis. worked around recreating pasteboard items without utis when paste: intercepted in webview:docommandbyselector:

- (void)cleanuppasteboard:(nspasteboard *)pasteboard {     nsmutablearray *newitems = [[nsmutablearray alloc] init];     (nspasteboarditem *item in pasteboard.pasteboarditems) {         nspasteboarditem *newitem = [[nspasteboarditem alloc] init];         (nsstring *type in item.types) {             if (![type hasprefix:@"dyn"]) {                 [newitem setdata:[item datafortype:type] fortype:type];             }         }         [newitems addobject:newitem];     }     [pasteboard clearcontents];     [pasteboard writeobjects:newitems]; }