Bug with replacing mercenary

Now search Mercenary - Bladebitter 83lvl STR/DEX
press HIRE -
Replace — return in hideout — double-checked merc name it 2 times
Choose useless Thrassel, the Azadin Sadist Sadist (Infamous Combatant) merc withou t replacing items (default)

And Kill to the Challenge

Return in Hideout and check mercenaries
Thrassel, the Azadin Sadist Sadist dont left and stay nearby
And dont see other Mercenaries DEX/INT with full equip Blade fall trartus EK
Equip:
DUAL W1+W2 - Obliteration Imbued Wand with AOE Corrupt 20% and 38% extra chaos
Helmet - Ylfeban's Trickery Hubris Circlet with Corrupted AOE 23%
Gloves - Asenath's Gentle Touch Silk Gloves with Corrupted Despair on hit
Body - near perfect Carcass Jack Varnished Coat
Amulet - Perquil's Toe Gold Amulet with Enchant Blast Radius
Belt - near perfect Gluttony Leather Belt
Boots with priple t1-t2 res 30 MS life 100 and implicit SAP + recovery life ratio and crafted Cannot be being freeze
Ring right - Anathema Moonstone Ring

Please return my mercenary or equip
Im lost all time to collect and equiping merc

Dont want play to this game if im lost all