Hi,
This tool gives access to open/close all the plugin windows on a channel. As well as closing/opening plugin windows for all channels. The controls are accessible in the Studio I/O panel.
You can configure the amount of devices./layers the extension monitors in the settings. This uses more memory/time to process. (Requires reboot of extension)
Latest release is downloadable here and is open source under MIT License
https://github.com/kirkwoodwest/Bitwig-Plugin-Window-Control
Shout out to the #controllerism crew! They all helped make this possible in some shape or form. Feel free to @ me here for help/support. Curious to know what you think.