Notes:

Given that the format of compiled lists and selfie changed, this may cause a noticeable delay for the first launch after updating to 1.40.0 or later on less powerful devices. For a concrete example, in Firefox for Android I got ~7 seconds launch time after update to 1.40.0. Subsequent launches will be back to normal, for example on mobile I get ~790ms with selfie (and "uBlock filters -- Annoyances" enabled). On more powerful devices, this should be less noticeable if at all.

New

A new setting in "Filter lists" pane to control whether uBO should wait for all filter lists to be loaded before unsuspending network activity.

By default, at browser launch uBO waits for all filter lists to be loaded before unsuspending network activity so as to ensure web pages are properly filtered at launch.

The new setting allows to opt out of network activity suspension at launch, i.e. allowing web pages to load without waiting for filter lists to be fully loaded, of course at the cost of potentially not filtering properly those web pages.