Please read: https://www.drupal.org/issue-queue/how-to
Problem/Motivation
(Why the issue was filed, steps to reproduce the problem, etc.)
SUGGESTIONS
* Search for any existing open/closed issues.
https://www.drupal.org/project/issues/webform?status=All&version=8.x
* Document the steps needed to reproduce the bug/issue.
* Try replicating the bug using https://simplytest.me/project/webform
* Export and attach a webform that isolates and replicates the issue.
Proposed resolution
(Description of the proposed solution, the rationale behind it, and workarounds for people who cannot use the patch.)
Remaining tasks
(OPTIONAL: Reviews needed, tests to be written or run, documentation to be written, etc.)
User interface changes
(OPTIONAL: New or changed features/functionality in the user interface, modules added or removed, changes to URL paths, changes to user interface text.)
API changes
(OPTIONAL: API changes/additions that would affect module, install profile, and theme developers, including examples of before/after code if appropriate.)
Data model changes
(OPTIONAL: Database or configuration data changes that would make stored data on an existing site incompatible with the site's updated codebase, including changes to hook_schema(), configuration schema or keys, or the expected format of stored data, etc.)
(OPTIONAL: Include any additional information about your specific environment that could be helpful, including Drupal version, Browser version, etc…)