Server with multithreaded enabled hangs after upgrade v6 -> v7

Debian: 10 PuppetDB: 7.7.1 PuppetServer: 7.4.2 Agent: 7.12.1 JVM Report: awt.toolkit=sun.awt.X11.XToolkit com.sun.management.jmxremote= com.sun.management.jmxremote.authenticate=false com.sun.management.jmxremote.local.only=false com.sun.management.jmxremote.port=9132 com.sun.management.jmxremote.rmi.port=9133 com.sun.management.jmxremote.ssl=false file.encoding=UTF-8 file.separator=/ java.awt.graphicsenv=sun.awt.X11GraphicsEnvironment java.awt.printerjob=sun.print.PSPrinterJob java.class.path=/opt/puppetlabs/server/apps/puppetserver/puppet-server-release.jar:/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/facter.jar:/opt/puppetlabs/server/data/puppetserver/jars/* java.class.version=55.0 java.home=/usr/lib/jvm/java-11-openjdk-amd64 java.io.tmpdir=/tmp java.library.path=/usr/java/packages/lib:/usr/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib java.rmi.server.hostname=localhost java.rmi.server.randomIDs=true java.runtime.name=OpenJDK Runtime Environment java.runtime.version=11.0.12+7-post-Debian-2deb10u1 java.specification.name=Java Platform API Specification java.specification.vendor=Oracle Corporation java.specification.version=11 java.vendor=Debian java.vendor.url= https://tracker.debian.org/openjdk-11 java.vendor.url.bug= https://bugs.debian.org/openjdk-11 java.version=11.0.12 java.version.date=2021-07-20 java.vm.compressedOopsMode=Zero based java.vm.info=mixed mode, sharing java.vm.name=OpenJDK 64-Bit Server VM java.vm.specification.name=Java Virtual Machine Specification java.vm.specification.vendor=Oracle Corporation java.vm.specification.version=11 java.vm.vendor=Debian java.vm.version=11.0.12+7-post-Debian-2deb10u1 jdk.debug=release jdk.tls.ephemeralDHKeySize=matched jetty.git.hash=526006ecfa3af7f1a27ef3a288e2bef7ea9dd7e8 jruby.invokedynamic.yield=false jruby.logger.class=com.puppetlabs.jruby_utils.jruby.Slf4jLogger line.separator=\n os.arch=amd64 os.name=Linux os.version=5.8.0-0.bpo.2-amd64 path.separator=: sun.arch.data.model=64 sun.boot.library.path=/usr/lib/jvm/java-11-openjdk-amd64/lib sun.cpu.endian=little sun.cpu.isalist= sun.io.unicode.encoding=UnicodeLittle sun.java.command=clojure.main -m puppetlabs.trapperkeeper.main --config /etc/puppetlabs/puppetserver/conf.d --bootstrap-config /etc/puppetlabs/puppetserver/services.d/,/opt/puppetlabs/server/apps/puppetserver/config/services.d/ --restart-file /opt/puppetlabs/server/data/puppetserver/restartcounter sun.java.launcher=SUN_STANDARD sun.jnu.encoding=UTF-8 sun.management.compiler=HotSpot 64-Bit Tiered Compilers sun.os.patch.level=unknown user.country=US user.dir=/ user.home=/opt/puppetlabs/server/data/puppetserver user.language=en user.name=puppet