svg/text/hidpi-text-selection-rect-position.html Test is a flaky failure on macOS wk1 Release according to history. The first occurrence of failure is at r264325 History: https://results.webkit.org/?suite=layout-tests&test=svg%2Ftext%2Fhidpi-text-selection-rect-position.html&platform=mac&style=release&flavor=wk1 Both position and size of rectangle are different from expected and actual Diff: https://build.webkit.org/results/Apple%20Mojave%20Release%20WK1%20(Tests)/r265190%20(16655)/svg/text/hidpi-text-selection-rect-position-diffs.html
Created attachment 406326 [details] Expected image
Created attachment 406327 [details] Actual image
Created attachment 406328 [details] Diff image Looks as though actual is zoomed in or different in size
<rdar://problem/66798632>
Test expectation while investigated: https://trac.webkit.org/changeset/265453/webkit