CiviCRM entity is missing bundle

I could replicate this issue. "Manage Display" can be broken if addtocalendar module is installed

errors like
Drupal\Core\Field\FieldException: Attempt to create a base field bundle override of field birth_date without a bundle in Drupal\Core\Field\Entity\BaseFieldOverride->__construct() (line 110 of /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php).

Backtrace:

Backtrace	
#0 /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php(222): Drupal\Core\Field\Entity\BaseFieldOverride->__construct()
#1 /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php(232): Drupal\Core\Config\Entity\ConfigEntityStorage->doCreate()
#2 /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php(75): Drupal\Core\Entity\EntityStorageBase->create()
#3 /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Field/BaseFieldDefinition.php(784): Drupal\Core\Field\Entity\BaseFieldOverride::createFromBaseFieldDefinition()
#4 /var/www/web/distro10.skvare.com/web/modules/contrib/addtocalendar/includes/addtocalendar.form.inc(91): Drupal\Core\Field\BaseFieldDefinition->getConfig()
#5 /var/www/web/distro10.skvare.com/web/modules/contrib/addtocalendar/addtocalendar.module(34): _addtocalendar_build_form()
#6 /var/www/web/distro10.skvare.com/web/core/modules/field_ui/src/Form/EntityViewDisplayEditForm.php(162): addtocalendar_field_formatter_third_party_settings_form()
#7 /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(388): Drupal\field_ui\Form\EntityViewDisplayEditForm->Drupal\field_ui\Form\{closure}()
#8 /var/www/web/distro10.skvare.com/web/modules/contrib/config_track/src/Extension/ModuleHandler.php(236): Drupal\Core\Extension\ModuleHandler->invokeAllWith()
#9 /var/www/web/distro10.skvare.com/web/core/modules/field_ui/src/Form/EntityViewDisplayEditForm.php(168): Drupal\config_track\Extension\ModuleHandler->invokeAllWith()
#10 /var/www/web/distro10.skvare.com/web/core/modules/field_ui/src/Form/EntityDisplayFormBase.php(451): Drupal\field_ui\Form\EntityViewDisplayEditForm->thirdPartySettingsForm()
#11 /var/www/web/distro10.skvare.com/web/core/modules/field_ui/src/Form/EntityViewDisplayEditForm.php(41): Drupal\field_ui\Form\EntityDisplayFormBase->buildFieldRow()
#12 /var/www/web/distro10.skvare.com/web/core/modules/layout_builder/src/Form/LayoutBuilderEntityViewDisplayForm.php(227): Drupal\field_ui\Form\EntityViewDisplayEditForm->buildFieldRow()
#13 /var/www/web/distro10.skvare.com/web/core/modules/field_ui/src/Form/EntityDisplayFormBase.php(213): Drupal\layout_builder\Form\LayoutBuilderEntityViewDisplayForm->buildFieldRow()
#14 /var/www/web/distro10.skvare.com/web/core/modules/layout_builder/src/Form/LayoutBuilderEntityViewDisplayForm.php(47): Drupal\field_ui\Form\EntityDisplayFormBase->form()
#15 /var/www/web/distro10.skvare.com/web/core/lib/Drupal/Core/Entity/EntityForm.php(107): Drupal\layout_builder\Form\LayoutBuilderEntityViewDisplayForm->form()

I made a PR from the patch to run tests:
https://github.com/eileenmcnaughton/civicrm_entity/pull/475

PR Merged in github, going out in next release

Automatically closed - issue fixed for 2 weeks with no activity.