v1.0.9
Small update posted a moment ago:

• Executing or releasing gladiators produces a pop-up confirming your choice
• Fixed bug where a gladiator would sometimes not enter the attack stance before firing pistol - resulting in a strange animation at times
• Fixed bug where gladiator would aim pistol before using a stim or species ability

You may need to close Steam and re-open for the new update to patch immediately.