Greetings,

I occasionally need to use Windows 10's high-contrast ("classic") theme because of sight impairment, which strips a lot of visual elements from the user interface generally, e.g.:


So when in high-contrast mode, I'm experiencing an issue I've never seen in any other program: no file dialogs appear when trying to open/save as a file. If I use the menu to either click on or press the hotkeys to use open (Ctrl+O) and save as (F12), nothing happens. No error message, just a return of the focus to the editor window. If I use the quick open (Ctrl+Q) method, the browse button therein opens the "select file" dialog, but I can only select one file which isn't practical. I'm a bit new to UltraEdit, but I've searched the web regarding to this issue without luck, and couldn't find any configuration settings that might help.

If I switch back to a standard, non–high-contrast Windows theme everything works perfectly — I don't even need to restart UltraEdit for open/save as to work normally again. 

Does anyone know why this is happening or how to fix it? Thanks for any input, happy editing.W

I am facing a very similar issue with UE 26.00.0.72 on Windows 10 x64 release 1803. I have reported it to IDM support. The steps to reproduce are as follows:

1. Open a new UE instance, which opens with a blank file Edit1.
2. Close the blank file using either Ctrl+F4 or using the x button on file tab.
3. Try to open a file using either Ctrl+O or using the open button on UE window title bar.