Exactly, I was working on a little client for a self-hosted server app. Imgui is a rare mix of fast, lightweight, trivially cross-platform and stable, so I went with it and had the client easily compiling for Windows, Linux and browser, while being trivial to work with.

I have otherwise mostly given up on making GUI applications because I simply don't have time to pick up a bunch of UI toolkits for all the different platforms, pulling a massive dependency into my project and requiring constant maintenance to keep the program working.