Reloading tab with beforeunload prompt closes tab when asking to stay on page since r255677.
<rdar://problem/59591630>
Created attachment 391304 [details] Patch
Comment on attachment 391304 [details] Patch r=me
Comment on attachment 391304 [details] Patch Clearing flags on attachment: 391304 Committed r257077: <https://trac.webkit.org/changeset/257077>
All reviewed patches have been landed. Closing bug.