UI hang up in creating new tab/file

[arcao]

Configuration

IDE Version: 1.6.12 (installed from ZIP file)
OS: Windows 10 Pro x64
Language: Czech

Issue Description

When I try to create new tab/file (CTRL+SHIFT+N), tapping on OK and Cancel button doesn't work and input text field for entering file name hang up.

Steps to reproduce

1. Create a new project
2. Add a new file/tab (CTRL+SHIFT+N)
3. Enter new file name
4. Press Ok or Cancel
5. Nothing happen and input text field hang up (keyboard keys ENTER and ESC works here OK)

Workaround

Instead of OK / Cancel buttons use ENTER and ESC keyboard keys. When the UI hungs up, press CTRL+SHIFT+N to "un-hang up" the text field. :)