I usually use the single document interface without tabs for Windows. After I clicked on the "Resize" icon of a window, a line with window tabs appeared above the window area. The menu item "Single Document" is still checked. Trying to turn off "Single Document" results in sliders being provided for the entire area in which the windows are displayed, which I can currently only eliminate if "Single Document" is turned back on. Then the line with the window tabs is visible again above the windows area. v15.0.4 does not have this behavior.
Best Regards Frank
Best Regards Frank