BUG #16799: postgresql log issue(last completed transaction was at log time)

The following bug has been logged on the website:

Bug reference: 16799
Logged by: oleg9301
Email address: oleg9301(at)gmail(dot)com
PostgreSQL version: 12.5
Operating system: debian 10
Description:

OS:Linux hostname 4.19.0-12-amd64 #1 SMP Debian 4.19.152-1 (2020-10-18)
x86_64 GNU/Linux (debian 10)

After recovering postgresql from barman, in version 12.5 I don't have next
string
"last completed transaction was at log time %s"
In postgresql 11.9-1.pgdg100+1 everything fine.

2020-12-31 17:37:25.529 MSK [25753] LOG: starting PostgreSQL 12.5 (Debian
12.5-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6)
8.3.0, 64-bit
2020-12-31 17:37:25.529 MSK [25753] LOG: listening on IPv4 address
"127.0.0.1", port 5432
2020-12-31 17:37:25.530 MSK [25753] LOG: listening on Unix socket
"/var/run/postgresql/.s.PGSQL.5432"
2020-12-31 17:37:25.575 MSK [25755] LOG: database system was interrupted;
last known up at 2020-12-31 15:10:34 MSK
2020-12-31 17:37:25.600 MSK [25755] LOG: redo starts at 11/E9000028
2020-12-31 17:37:25.608 MSK [25755] LOG: consistent recovery state reached
at 11/E904C2D8
2020-12-31 17:37:26.342 MSK [25755] LOG: redo done at 11/EFFFFF50
2020-12-31 17:37:26.656 MSK [25753] LOG: database system is ready to accept
connections