--- breadcrumbs: - - /teams - Teams - - /teams/animations - Animations Team - - /teams/animations/highlights-archive - Highlights Archive page_name: october-2020---code-health-scroll-timelines-synthetic-user-activation-scroll-unification-and-more title: October 2020 - Code Health, Scroll Timelines, Synthetic User Activation, Scroll Unification and more! ---

October 2020 | Chrome Interactions Highlights | Archives: go/interactions-team-highlights

| Code health |  |  |  | The graph shows our latest bug fixing efforts in this sprint: |  | We made steady progress on bug fixes. |  | We held steady on P0s and P1s. |  | Nearly held steady on P2s, which is awesome! |  | Scroll timeline |  |  |  | flackr@ made tremendous progress on scroll timeline polyfill: |  | Landed 13 patches. |  | Discovered two bugs. |  | Wrong error thrown. |  | rootMargin missing in spec. |  | 215 new passing tests out of 354 total tests. The above graph shows the number of passing tests when each patch landed. |
| Synthetic user activation |  |  |  | TriggerForConsuming |  |  |  | TriggerForTrasient |  |  |  | TriggerForSticky |  | mustaq@ has done with UMA for synthetic triggers. |  | Seeing expected results for non-extensions, but not expected for extensions! |  | Scroll unification |  | liviutinta@ organized the remaining work on scroll unification, and splits the work between Q4 2020 and Q1 2021. This doc captures the work nicely. |  | Click/Auxclick as pointer event |  | mustaq@ is working on a finch experiment on this feature.. |  | Ran finch experiment at 25% on Canary and Dev channels. |  | Expanded finch experiment to 50% Canary and Dev (08-Oct-2020) |  | Currently in progress of moving to 50% on Canary, Dev and Beta channels. |  |
| Composite transform animations containing percents |  |  |  | gtsteel@ has landed a complete implementation for animations targeting CSS boxes. The above demo shows the difference of running the animation on the main vs the compositor thread (with artificial jank). |  | This makes ~10% of transform animations potentially less janky. |  | Devtool input protocol |  | lanwei@ has merged the spec change of adding pointerevent’s additional properties to Webdriver Action API and added these properties to Devtool Input Protocol. |  |  |  |

Chrome Interactions Highlights | October 2020 | go/interactions-team