Yes, this is the expected behavior, because Hell’s Ingress and Hell’s Egress are not implemented.
This is not related to patch 7.5.
The problem with Reaper’s dashes is that they don’t have an actual target to dash to or from, they teleport the character in the direction it’s currently facing instead. But Miqobot evaluates a dash as an ability that is supposed to reliably move the character towards the enemy target. Since Ingress/Egress have a different mechanic, they require additional calculations to predict the final dash destination and even then it’s still not guaranteed to end up at the correct spot (for example, if you press a directional button at the same moment Miqobot uses a dash, your character might jump off a cliff instead).
Because of all these complications combined with the low usage of this feature, Reaper dashes weren’t implemented in Miqobot.