Doesn't work {{ blabla.0.primaryDisplay }} thing from relationship table (in Formula type field)

[baianding]

Hi, I'm trying to calculate field in column (type "Formula") and I need the primaryDisplay value from relationship table.

{{ blabla.0.primaryDisplay }} shows empty field
but
{{ blabla.0._id }} shows exactly id like "ro_ta_8990a7fb07934651b7c501908472358e_0d0a0c4339e648e0b8b502e1ff67471c"

WTF?

I'm using self-hosted Budidase (up to date).

The same dead discussion without solution:
#4018

Help, please)