The Batch task history panel is empty (Find pane only) since the 1.634 version.
Maybe linked, a blocking bug has been introduced within the 1.633 version (cf. JENKINS-30820) that impeded to add any batch task on job.
I guess the bug comes from the core but maybe the Batch Task Plugin should be upgraded

Use case
To reproduce:

• install the Batch Tasks plugin
• create an empty freestyle job with Batch tasks option (echo "Hello world")
• run a build
• run the task several times
• look at the task build history (/job/<job name>/batchTasks/task/<task name>/)

Tested with 1.616, 1.632: the batch history panel displayed all the builds.
Tested with 1.633: cannot access to my job. Create a new one, cannot create Batch task because of ClassNotFoundException: org.jenkinsci.lib.envinject.service.EnvVarsResolver
Tested with 1.634, 1.642.3: the batch history panel is empty (Find pane only)