Roundcube interface just randomly changed behavior... Spacing on Subject

[EndUser]

Just out of the blue, the Subject line in emails are issuing a CR/LF before truncating with a trailing ellipsis... see attached image.

If the Subject line is short enough, it doesn't CR/LF... see attached image.

No matter how much I stretch the column (except to include the entire Subject line), it won't fix itself. This occurs in all mailboxes, not just Inbox.

I'm using the "Larry" User Interface with no changes from the default install.

Thanks.