Locus Map 4: guiding in reverse shows double arrows

We are trying out LM4 (after more than 15 years of LM3). All our tracks have line style arrows nr 3.
Now we always hike with the use of "guiding along a track". Sometimes we walk in reverse and want also guiding in reverse. LM3 does a decent job for that by switching the direction of the arrows.
However, LM4 creates a double set of arrows, one going up and one going down. Makes viewing the track on the map pretty useless. Any tips? (p.s. we are testing with the free version of LM4).