I recieved a mod in the Sanctuary onslaught

I picked up a Mod during the low level sanctuary onslaught.

Was that a glitch, or did they change something?
Havent read anything about it.

submitted by /u/Alexander556
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source https://www.reddit.com/r/Warframe/comments/tlw6no/i_recieved_a_mod_in_the_sanctuary_onslaught/