A workaround I found for editing/deleting chips is going to AppData\LocalLow\Sebastian Lague\Digital Logic Sim\SaveData\ and removing the chip TXT files (or if you know how the app reads the data you can edit the file)
This is a good workaround. Thank you for the idea.
Better facilities for managing chips would be great when you have lots of them. - Making a new one with the same as an old one should ask you if you’d like to overwrite the old one instead of doing nothing.
