In escalations, several operations can be assigned to the same step. If these operations have different step duration defined, the shortest one is taken into account and applied to the step. But due to bug there was exception to this rule when step duration is set to 0, it would use default value instead of shortest one. Now there will be no exception and default step duration will only be used when it's shortest, this is equivalent to behavior that frontend shows and user expects.
The severity of web scenario failed step log messages has been reduced from debug level 3 (warnings) to 4 (debugging).