Thank you for the information. After the update, I played some Frontline matches as a Sage and used Icarus many times on both allies and enemies to dash to a target. I play on PC via Steam and recorded my matches using the recording feature. Upon reviewing my recordings, whenever Icarus was not working without an error message and I was not affected by a status effect, the target was out of range. I use the JP datacenter, and my ping is usually around 20ms, but it can occasionally be slow. I often felt that actions were not working, but the cases I can think of mostly occur when the network is lagging. There was an exception, but it does not seem to be related to your case. I once experienced an issue where I could not attack an enemy within range and in line of sight, but it turned out that the auto-facetarget option had been disabled unintentionally.

While team matchmaking in Crystalline Conflict is indeed random, I think the mechanic where duplicate jobs are not allowed within the same team could be a contributing factor. For example, if an experienced player keeps playing the same job as me, they will always be placed on the opposing team and never on mine. As a result, I ended up on a losing streak.