Bug: WYSIWYG editor excessive bottom margin

Bug: WYSIWYG editor excessive bottom margin

I'm pretty sure this is a new issue in the last couple of days.
The WYSIWYG editor is setting the bottom of the edit area a long way from the bottom of the window, leaving a large wasted space that should instead be dedicated to the edit area.
Here is a screen cap.
This issue shows up across multiple zoho wiki sites, and happens on both Firefox and Chrome, on Windows. (7-64).

          Zoho TeamInbox Resources

            Zoho DataPrep Resources

                Zoho CRM Plus Resources

                  Zoho Books Resources

                    Zoho Subscriptions Resources

                      Zoho Desk Resources

                        Zoho Projects Resources

                          Zoho Sprints Resources

                            Zoho Orchestly Resources

                              Zoho Creator Resources

                                Zoho WorkDrive Resources

                                    Zoho Campaigns Resources

                                      Zoho CRM Resources

                                                    Design. Discuss. Deliver.

                                                    Create visually engaging stories with Zoho Show.

                                                    Get Started Now

                                                      Zoho Show Resources

                                                        Zoho Writer Writer

                                                        Get Started. Write Away!

                                                        Writer is a powerful online word processor, designed for collaborative work.