The TimeGhost production team doesn’t seem to leave any detail to chance, so we couldn’t help but notice the smidgen of frontline still consistently appearing on the isles west of Estonia on your Eastern Front maps. Given your meticulous track record, there must be an interesting story behind it, rather than cartographic oversight
Were abandoned Soviet troops holding out on the island(s?) off the coast of Estonia?
West Estonian archipelago was a site of several Soviet military installations at the start of the war. Between 7th of August and 5th of September the airbase on Saaremaa was used for the retaliatory Soviet air raids on Berlin.
With the fall of Tallin at the end of August the islands were cut off from supply. From September 6th to October 22nd German forces conducted series of landings and assaults on archipelago(operation Beowulf) destroying Soviet forces(around 20000 men) left on the islands. Few managed to evacuate to Hanko and Sweden.
It is also notable that these were the same islands that were taken by Germans in WWI during operation Albion.