codenvy: Failed to get private ssh key

Fairly often we get an error while trying to git pull from our Codenvy workspace: Failed to get private ssh key. You can create a new SSH key pair in Profile->Preferences->SSH->VCS.. I understand what is being asked of me, but have already done so… We have both set a private SSH key in the workspace configuration, and created a host in Profile > Preferences > SSH > VCS for our Git server. Even after setting an SSH key pair, the problem remains.

When this happens I have to revert using Git in a terminal (with a id_rsa file manually stored in ~/.ssh/).

Is there anything I could try to unblock the situation?

Reproduction Steps:

Unfortunately I am not able to consistently reproduce the problem from a blank workspace. I can share an existing workspace that displays the problem if this could help.

Codenvy version: codenvy.io 5.6.0