The thing is those are likely to be simple GUIs. Those are a great use case for immediate mode. But try it with something that has a lot of: - Wrapping text la

The thing is those are likely to be simple GUIs. Those are a great use case for immediate mode. But try it with something that has a lot of: - Wrapping text labels - Widgets that are similar to CSS flexbox where the size of elements depends on other elements - List/tree widgets or text editor widgets with large datasets in them And then you will notice performance tanks. Think of trying to build a text editor that way, if you opened a 5MB text file, you would have to rescan the whole 5MB and compute reflow for it every time.