We've tagged Yii2 debug extension version 2.1.27. It fixes a bug of unnecessary usage of backticks in UserPanel resulting in inability to work with environments where shell_exec is not available. No security was affected.
It seems, we've also forgot to write about 2.1.26:
- Backtrace for internal PHP functions was added.
Module::$toolbarPositionwas added to configure toolbar position.yii\debug\Module::$authManagerwas added to select RBAC manager used byUserPanel(default isauthManager).