When a target is beyond the range of a missile, is the missile meant to detonate after traveling a set distance, or after the guidance time battery runs out?
I ask this because when doing some testing with the Hellfire and JAGM, if you launch it at something outside its stated range, it will detonate the second it hits its stated max range (plus about 0.1km or so) despite having plenty of energy and guidance time left.
Hellfire

According to its statcard (and the missile spreadsheet) the Hellfire has a maximum guaranteed range of 8km and a guidance time of 45 seconds.
When testing in a custom battle, it can go a tiny bit beyond its max stated range and still hit. I believe this shot was at about 8.05km.
But when I fire it at at around 8.2 or 8.3km, it detonates midair after having traveled just over 8.1km and flying for 34.8 seconds, despite it having plenty of speed left to keep going and 10.2 seconds of guidance time remaining.
Traveling 8.1km in 34.8 seconds puts it at an average speed 232.76 m/s. If it were to travel with that average speed for its entire guidance time, it would be able to travel ~10.5km, close to it’s publicly stated range (guaranteed max range of 8km, can still hit out to ~11km)
JAGM

According to its statcard (and the missile spreadsheet) the JAGM has a maximum guaranteed range of 16km and a guidance time of 75 seconds.
When testing in a custom battle, it can go a tiny bit beyond its max stated range and still hit. I believe this shot was at about 16.1km
But when I fire it at at around 16.2 or 16.3km, it detonates midair after having traveled just over 17.6km (the much further distance traveled is thanks to the JAGM’s improved lofting over the Hellfire in game) and flying for 69.8 seconds, despite it having plenty of speed left to keep going and 5.2 seconds of guidance time remaining.
Traveling 17.6km for 69.8 seconds puts it at an average speed 252.15 m/s. If it were to travel with that average speed for its entire guidance time, it would be able to travel ~19km, which is closer to what it likely should be, because the JAGM-MR is supposed to roughly double the range of the JAGM, which itself is supposed to have roughly the same range of the Hellfire. The first JAGM was just an improved guidance section strapped to the motor of an AGM-114R after all.
This likely applies to many other missiles as well, but these were the only 2 I either had access to or felt like testing. Is this an intended feature, or is this something that should be bug reported?