Trying to edit a Comment-to-an-Answer-in-Ponder fails with this exception:
Attempting to apply a transaction (of class "PonderAnswerTransaction", with type "core:edge") which has not been constructed correctly: Transaction has type "core:edge", but that transaction type is not supported by this editor (PonderAnswerEditor). Stack trace: PhabricatorApplicationTransactionEditor::validateEditParameters called at [/var/www/phorge/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php:1209] PhabricatorApplicationTransactionEditor::applyTransactions called at [/var/www/phorge/src/applications/transactions/editor/PhabricatorApplicationTransactionCommentEditor.php:122] PhabricatorApplicationTransactionCommentEditor::applyEdit called at [/var/www/phorge/src/applications/transactions/controller/PhabricatorApplicationTransactionCommentEditController.php:66] PhabricatorApplicationTransactionCommentEditController::handleRequest called at [/var/www/phorge/src/aphront/configuration/AphrontApplicationConfiguration.php:284] phlog called at [/var/www/phorge/src/aphront/handler/PhabricatorDefaultRequestExceptionHandler.php:41] PhabricatorDefaultRequestExceptionHandler::handleRequestThrowable called at [/var/www/phorge/src/aphront/configuration/AphrontApplicationConfiguration.php:751] AphrontApplicationConfiguration::handleThrowable called at [/var/www/phorge/src/aphront/configuration/AphrontApplicationConfiguration.php:296] AphrontApplicationConfiguration::processRequest called at [/var/www/phorge/src/aphront/configuration/AphrontApplicationConfiguration.php:204] AphrontApplicationConfiguration::runHTTPRequest called at [/var/www/phorge/webroot/index.php:35]
(To reproduce - ctrl-click the "edit comment" action, to get it in a new tab rather than a dialog, and hit save).