Summoned troops in PvP don't get talisman and monolith buffs

Platform, device version and operating system:
Steam/PC
Screenshot or image:

What you were expecting to happen, and what actually happened:
I found my summoned troops got one-shot by opponent’s takshaka, despite I have 45% spell damage reduction monolith, so I checked their stats and buffs.
This is my hero, who is in initial team:


This is my summoned troop:

No buff at all. No wonder it got one-shot.

How often does this happen? When did it begin happening?
Not sure since when. Also not sure if it is intentional or not.

Steps to make it happen again
Summon a troop in PvP while using monolith and/or talisman.