I always get infuriated by custom UI components, because they are <i>always</i> poorly implemented for keyboard accessibility. <i>Always.</i> I have never met an exception. Seriously, is it <i>that</i> hard to copy the platform behaviour for keypresses, <i>&c.</i>? Sure, some of the details vary by platform, but it shouldn’t be difficult to get the vast majority of it right. Especially for Windows, given Fabric’s primary target.<p>Fabric is still no exception, though I find it better than the alternatives in almost everything.<p>(The menu bar component that seems to be used with Electron apps is extremely irritating in its keyboard handling: left and right arrow keys don’t let you switch between menus like they should.)