Unable to Submit Website Forms with Conditional Signature Fields (Includes Workaround)

Known Issue|We’re investigating this issue.
We're aware of the issue and are currently gathering more information regarding this matter.
Meanwhile, you can use the following workaround:
1. Open the form settings.
2. Click Conditions.
3. Edit the relevant conditions that involve the signature field and uncheck the signature field.
4. Publish your site to see changes live.