A disabled pipeline job is automatically re-enabled after restarting the machine. Operators have restarted the server where Jenkins is running, after coming back online the job was enabled. 

Disabling the job is done via API:

session.post('https://{0}:{1}@{2}/job/{3}/{4}'.format(jnkns_user, jnkns_token, jnkns_url, job, activation_mode)) // enable/disable

Installed plugins:

ace-editor: 1.1
active-directory: 2.23
android-signing: 2.2.5
ansicolor: 0.7.5
ant: 1.11
antisamy-markup-formatter: 2.1
apache-httpcomponents-client-4-api: 4.5.13-1.0
authentication-tokens: 1.4
bouncycastle-api: 2.20
branch-api: 2.6.3
build-blocker-plugin: 1.7.7
build-timeout: 1.20
build-timestamp: 1.0.3
build-token-root: 1.7
build-user-vars-plugin: 1.7
cloudbees-bitbucket-branch-source: 2.9.8
cloudbees-folder: 6.15
command-launcher: 1.5
conditional-buildstep: 1.4.1
config-file-provider: 3.8.0
configurationslicing: 1.52
credentials-binding: 1.24
credentials: 2.3.18
database-mysql: 1.4
database: 1.7
dependency-check-jenkins-plugin: 5.1.1
description-setter: 1.10
display-url-api: 2.3.4
docker-commons: 1.17
docker-workflow: 1.26
durable-task: 1.35
email-ext: 2.82
envinject-api: 1.7
envinject: 2.4.0
extended-choice-parameter: 0.82
external-monitor-job: 1.7
git-client: 3.7.1
git-parameter: 0.9.13
git-server: 1.9
git: 4.7.1
github-api: 1.123
github-branch-source: 2.10.2
github: 1.33.1
gradle: 1.36
greenballs: 1.15.1
handlebars: 3.0.8
handy-uri-templates-2-api: 2.1.8-1.0
hidden-parameter: 0.0.4
htmlpublisher: 1.25
http_request: 1.8.27
jackson2-api: 2.12.3
javadoc: 1.6
jdk-tool: 1.5
jenkins-design-language: 1.24.6
jira: 3.2.1
jobConfigHistory: 2.27
jquery-detached: 1.2.1
jquery: 1.12.4-1
jsch: 0.1.55.2
junit-attachments: 1.6
junit: 1.49
kpp-management-plugin: 1.0.0
ldap: 2.6
lockable-resources: 2.10
log-parser: 2.1
mailer: 1.34
mapdb-api: 1.0.9.0
matrix-auth: 2.6.6
matrix-project: 1.18
maven-plugin: 3.10
mercurial: 2.14
momentjs: 1.1.1
nexus-jenkins-plugin: 3.11.20210420-142258.bdfc332
pam-auth: 1.6
parameterized-trigger: 2.40
performance: 3.19
persistent-parameter: 1.2
pipeline-build-step: 2.13
pipeline-github-lib: 1.0
pipeline-graph-analysis: 1.10
pipeline-input-step: 2.12
pipeline-maven: 3.10.0
pipeline-milestone-step: 1.3.2
pipeline-model-api: 1.8.4
pipeline-model-definition: 1.8.4
pipeline-model-extensions: 1.8.4
pipeline-multibranch-defaults: 2.1
pipeline-rest-api: 2.19
pipeline-stage-step: 2.5
pipeline-stage-tags-metadata: 1.8.4
pipeline-stage-view: 2.19
pipeline-utility-steps: 2.7.1
plain-credentials: 1.7
plot: 2.1.9
plugin-usage-plugin: 1.2
project-description-setter: 1.2
publish-over-cifs: 0.16
publish-over-ssh: 1.22
publish-over: 0.22
pubsub-light: 1.13
analysis-model-api: 10.0.0
resource-disposer: 0.15
run-condition: 1.5
scm-api: 2.6.4
script-security: 1.76
sitemonitor: 0.6
sse-gateway: 1.24
ssh-agent: 1.22
ssh-credentials: 1.18.1
ssh-slaves: 1.31.5
ssh-steps: 2.0.0
ssh: 2.6.1
ssh2easy: 1.4
structs: 1.22
subversion: 2.14.0
thinBackup: 1.10
timestamper: 1.12
token-macro: 2.15
trilead-api: 1.0.13
openshift-sync: 1.0.46
versionnumber: 1.9
windows-slaves: 1.7
workflow-aggregator: 2.6
workflow-api: 2.42
workflow-basic-steps: 2.23
workflow-cps-global-lib: 2.18
workflow-cps: 2.90
workflow-durable-task-step: 2.38
workflow-job: 2.40
workflow-multibranch: 2.23
workflow-scm-step: 2.12
workflow-step-api: 2.23
workflow-support: 3.8
ws-cleanup: 0.39
zentimestamp: 4.2
h2-api: 1.4.199
jacoco: 3.1.1
scmskip: 1.0.3
sonar: 2.13
blueocean-rest: 1.24.6
extensible-choice-parameter: 1.7.0
warnings-ng: 9.0.1
kubernetes-client-api: 4.13.3-1
pipeline-github: 2.7
kubernetes-credentials: 0.8.0
forensics-api: 1.0.0
blueocean-commons: 1.24.6
metrics: 4.0.2.7
google-oauth-plugin: 1.0.5
kubernetes: 1.29.4
monitoring: 1.87.0
plugin-util-api: 2.1.0
jjwt-api: 0.11.2-9.c8b45b8bb173
echarts-api: 5.1.0-2
oauth-credentials: 0.4
variant: 1.4
openshift-client: 1.0.34
font-awesome-api: 5.15.2-2
jquery3-api: 3.6.0-1
popper-api: 1.16.1-2
bootstrap4-api: 4.6.0-3
data-tables-api: 1.10.23-3
saml: 2.0.3
google-play-android-publisher: 4.1
snakeyaml-api: 1.27.0
checks-api: 1.7.0
scm-filter-branch-pr: 0.5.1
github-scm-trait-notification-context: 1.1
disable-github-multibranch-status: 1.2
Office-365-Connector: 4.14.0
mysql-api: 8.0.16
view-job-filters: 2.3
okhttp-api: 3.14.9