v28.3.1 (2019-01-23)
This is a minor bugfix and stability release.
If you are using a language pack, please make sure you have the matching version for this browser version installed. Some strings were added for Captive Portal detection (see below) and outdated language packs will cause blank preference pages.

Changes/fixes:
Improved toolbar icon display for all DPIs on Windows.
Disabled the IntersectionObserver API by default while we work on resolving crashes caused by it.
Added isIntersecting to the IntersectionObserver API per specification.
Added an option to the preferences window to enable Captive Portal detection (Advanced -> General). If your network connection regularly encounters Captive Portals
(e.g. using a laptop on the road or other WiFi connections that require login or agreement to terms) then enabling this detection may make your use of such networks more convenient.
For those worried about privacy: the detection service makes use of our own infrastructure and does not contact third parties like Apple or Google.