Byzantine Mercenary House/Barracks selection bug

This is hapoening on PC/Steam and windows 10

I hope I’ve included enough and correct info

Issue:Hey everyone,

I’m running into a strange issue while playing as the Byzantines in Age of Empires IV and wanted to see if anyone else has experienced this or found a fix.

Issue:

When I double-click a Barracks, the game sometimes selects Mercenary Houses as well, and when I double-click a Mercenary House, it selects Barracks. Single-click selection seems fine — the problem only happens with double-clicking to select all of one building type.

What I’ve noticed so far:

  • Happens consistently with the Byzantines (100%)

  • Only affects Barracks ↔ Mercenary Houses

  • Double-click selection specifically (not drag select)

Things I’ve tried:

  • Checking hotkeys and control groups
    (No luck so far)

Questions:

  • Is this a known bug?

  • Any workaround (settings, hotkeys, or mod conflicts) I should check?

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Trigger Event:

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