page.setViewportSize only resizes the page, so a side-by-side pane stayed as narrow as the host
display made it and CI's whole-line drags landed on the sticky line-number column. Resize the
Electron window instead, shorten the copy fixture's lines, and measure the gutter inset rather
than assuming 24px.
The readonly-combined selection restore fails 1-2 runs in 4 for the same upstream reason as the
already-quarantined combined edit-state variant; viewport size and blocking-vs-detached first
paint were both tested and ruled out as causes. Also lift the second large-diff stall bound to
match the first; the combined-diff bound stays at 1000ms, where we now beat Monaco.
CI runs a narrower window than a dev machine, so a side-by-side pane was too narrow to expose
both ends of a whole-line selection and the drag landed on the sticky line-number column. Pin the
viewport in both specs, scroll the target rows into view vertically, and measure the gutter inset
instead of assuming 24px.
Neil
Neil