Re-production

Redhat 7

Service Locale  - en_AU.UTF-8 (or french or german)

Logback version 1.2.9:

Patten encoder:

<pattern>%h %l %u [%t] "%r" %s %b "%i{Referer}" "%i{User-Agent}" %D %i{Content-Length} %mdc{jruby.borrow-time:--}</pattern>

When in en_us the logs have the following timestamp:

[07/Oct/2022:13:13:45 +0000]

 with en_AU.UTF-8

 [07/Oct./2022:13:13:45 +0000]

This does not match the expected pattern layout:
 https://logback.qos.ch/manual/layouts.html#AccessPatternLayout
 
and cause subsequent parsing errors downstream for our projects

Its possible this relates to https://jira.qos.ch/browse/LOGBACK-302 but i was unable to confirm the specifics of what that reporter was seeing, only that indeed the french locale does the same thing:

 [07/oct./2022:13:13:45 +0000]

Only with a lowercase "o"