BATTLETECH - Impossible "defend pirate storehouse" mission

[Zed Dynamite]

One line summary of your issue
Impossible "defend pirate storehouse" mission

What platform are you running the game on?

Steam

What operating system do you use?
Windows 10
Which version of the game are you running?
1.6.1-542R
What DLC do you have installed?
Flashpoint,
Urban Warfare

Please explain your issue is in as much detail as possible.
Had a mission where I had to defend a pirate storehouse, 3 skulls with a moderate payout.

Started by engaging with the main enemy lance (mid/heavy). On round 3, *two* additional mid/heavy lances spawned on opposing sides of the base, immediately within range of the very lightly-armored buildings, and started leveling them.

I tried doubling back to engage, but to no avail. I only ever got to move one of my mechs before the buildings were all gone. Mission failed.

Steps to reproduce the issue


Attach DxDiag (PC), System Info log (Mac), or run sudo lshw -html > specs.html and uploaded specs.html (Linux)

Attach Output Log
Windows: BATTLETECH\BattleTech_Data\output_log.txt
Mac OS: Users >{name} > Library > Logs > Unity > Player.log
Linux: ~/.config/unity3d/Harebrained Schemes/BATTLETECH/Player.log

If the game crashed, please attach the crash file with the time stamp closest to the crash.
Windows: [Steam library folder]\steamapps\common\BATTLETECH\DumpBox
OSX: Macintosh HD > Users > [username] > Library > Application Support > Steam > steamapps > common > BattleTech > DumpBox
Linux: [Steam library folder]/steamapps/common/BATTLETECH/DumpBox

If a save game was loaded at the start of the game session, upload it. Please make sure to upload the save game with the timestamp closest to when you loaded it.
Windows:
Steam: [Steam installation folder]\userdata[SteamID]\637090\remote\C0\SGS1
GOG: 'C:\Users\USER_ID\AppData\Local\GOG.com\Galaxy\Applications\50593543263669699\Storage\Shared\Files\C#\SGS#'
Vanilla:'C:\Users\USER_ID\AppData\LocalLow\Harebrained Schemes\BattleTech\C#\SGS#'
OSX:
Steam: Macintosh HD > Users > [username] > Library > Application Support > Steam > userdata > [SteamID] > 637090 > remote > C#> SGS#
GOG: Macintosh HD > Users > [username] > Library > Application Support > GOG.com > Galaxy > Applications > 50593543263669699 > Storage > Shared > Files > C# > SGS#
Vanilla: Macintosh HD > Users > [username]> Library > Application Support > unity.Harebrained Schemes.BattleTech > C# > SGG#
Linux:
Steam: /home/.steam/steam/userdata/[steamID]/637090/remote/C#/SGS#
GOG: /home/[username]/.config/unity3d/Harebrained Schemes/BATTLETECH/remote/C#/SGS#/
Vanilla: /home/[username]/.config/unity3d/Harebrained Schemes/BATTLETECH/remote/C#/SGS#/

Attach screenshot / video

 

[Zed Dynamite]

Ok, this just got better. Tried replaying the mission, and now the very first lance, in the same turn that it pops in the radar, shoots a warehouse down. Jeez.