apache2-2.4.29-1ubuntu4.12 causes SSL Client Certificate verification to fail

[fluff]

Upgraded from apache2-2.4.29-1ubuntu4.11 to apache2-2.4.29-1ubuntu4.12 caused SSL Client certificate verification to stop working. Downgrading apache2, apache2-bin, apache2-data, apache2-utils back to 2.4.29-1ubuntu4.11 restored SSL Client certificate verification functionality. No configuration changes where made.

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In /etc/apache2/mods-enabled/ssl.conf:

SSLCACertificateFile "/etc/ssl/certs/ca.pem"

In /etc/apache2/sites-enabled/000-default-le-ssl.conf:
<Location "/wp-login.php">
   <If "! -R 'n.n.n.n/32'">
      SSLOptions +StdEnvVars
      SSLVerifyClient require
   </If>
</Location>
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Log output when connecting to apache2-2.4.29-1ubuntu4.12:

[Wed Mar 04 08:03:21.266624 2020] [ssl:error] [pid 20037:tid 140559339464448] [client 1.2.3.4] AH: verify client post handshake
[Wed Mar 04 08:03:28.654651 2020] [ssl:error] [pid 20037:tid 140559339464448] [client 1.2.3.4] AH02263: Re-negotiation handshake failed: Client certificate missing

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root@www:/var/log# lsb_release -rd
Description: Ubuntu 18.04.4 LTS
Release: 18.04

[fluff (dune-fluffigt)]

Seems to be because of https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1834671

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paride Legovini (paride)]

I'm marking this bug as a duplicate of #1865900. Please comment back if you don't agree the two bug reports are for the same issue.