BUG #17782: ERROR: variable not found in subplan target lists

The following bug has been logged on the website:

Bug reference:      17782
Logged by:          Dmytro Hanzhelo
Email address:      d.hanzhelo@indevlab.com
PostgreSQL version: 13.9
Operating system:   CentOS Linux release 8.3.2011
Description:

The our client contacted us and we reproduced the error in our test
environment. 
We reproduced the error on PostgresQL v.13.3 and then upgrade to v.13.9 and
still get this ERROR.
We expect a fix in the release "10.21, 11.16, 12.11, 13.7, 14.3 released
2022-05-12" but nothing.

This SQL request returned ERROR. 

UPDATE corestatus.system_module
SET state=true
WHERE module_name='cfront_exchangerate';
ERROR:  variable not found in subplan target lists

We can provide dump for reproduce. 
Please advice.