Scheduler fields for Taxonomy Terms remain hidden when site is built for Tugboat preview

In SchedulerManager resetFormDisplayFields() for some reason, $form_display->isNew() is TRUE for the vocabulary default display, so the loop exits and does nothing.

entityTypeId => taxonomy_term
bundle_id => tags
display_mode => default
form_display => stdClass Object
(
    [__CLASS__] => Drupal\Core\Entity\Entity\EntityFormDisplay
    [entityTypeId:protected] => entity_form_display
    [enforceIsNew:protected] => 1
    [typedData:protected] => 

At the same point in the site build, the node, product and media forms all have isNew() false. I don't know why Taxonomy is different.

Adding the issue where this problem was discovered.

Modified the title, it is not just Tugboat previews - this happens when configuring a locally-built site using drush commands.

Calling
vendor/bin/drush config-get devel.settings
seems to cause
Timeout (Tugboat Error 1085)

Getting just the single item vendor/bin/drush config-get devel.settings debug_logfile produced no error but also no output in the log.

Then adding a config-set

vendor/bin/drush -y config-set devel.settings debug_logfile 'custom_debug.log'

caused the build to fail

jonathan1055 → closed merge request !178

jonathan1055 → reopened merge request !178