Optional chaining was added in Chromium 80; the macOS Qt5 build uses 5.14 which is Chromium 77. Qt 5.15 introduces some regression, so .14 is better on macOS.
Optional chaining was added in Chromium 80; the macOS Qt5 build uses 5.14 which is Chromium 77. Qt 5.15 introduces some regression, so .14 is better on macOS.