The text area of HTML field is getting completely shrunk in TOKYO versionDescriptionThe text area of HTML field is getting completely shrunk in TOKYO versionSteps to Reproduce 1. Login to any out-of-the-box Tokyo instance2. Go to Incident Form (incident.do) and Try to add a field of type HTML on the form using (Configure Form Layout).3. Once the field is added try to minimise the Text Area of HTML fieldObserve the Text Area becomes completely shrunk.Try the same steps (1 to 3) in Rome & SanDiego Instance, You will observe text area cannot be shrunk beyond a limit.Expected behavior:Text area should not be shrunk beyond a limit just like in Rome & SanDiego versionActual behavior:The text area of TinyMCE is getting completely shrunkWorkaroundThis is an expected behaviour starting from tinyMCE v5 as height of the editor is considering both toolbar and status bars. prior to v5 height is set to the editor content area only excluding toolbar and status bar.Related Problem: PRB1616630