Investigate why forceRenderTabPanel is used #6767
Description
forceRenderTabPanel on components/gui/gui.jsx causes it to render contents of non-selected tabs. This causes performance issues with large projects, as the blocks are never removed from DOM regardless of the selected tab. For example, opening the costume tab still loads all blocks that are not visually rendered.
Would it be possible to refactor so that forceRenderTabPanel is not used?