The STR are fast for me as well (with Nightly on Linux, Dell XPS 15 9570). ~1s reaction time (And some of that 1s is an intentionally-imposed throttle, I think, to avoid reacting too quickly for each keypress when a user is typing/editing a multi-digit page number, for example.) I definitely agree that we can & should needless reflow for page-range changes, but it doesn't seem likely that that's the bottleneck here, given the variation in experiences. Could you capture a profile of the slowness & we can see if there might be something else involved? (Meanwhile, I'll spin off a dedicated bug for avoiding needless reflow)
Bug 1668230 Comment 4 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
The STR are fast for me as well (with Nightly on Linux, Dell XPS 15 9570). ~1s reaction time (And some of that 1s is an intentionally-imposed throttle, I think, to avoid reacting too quickly for each keypress when a user is typing/editing a multi-digit page number, for example.) I definitely agree that we can & should avoid needless reflow for page-range changes, but it doesn't seem likely that that's the bottleneck here, given the variation in experiences. Could you capture a profile of the slowness & we can see if there might be something else involved? (Meanwhile, I'll spin off a dedicated bug for avoiding needless reflow)