Lunar Client is probably testing out how they can implement the Badlion rendering API to Lunar so a lot of rendering elements are bugged right now which are causing players to get blind when not on full HP and tons of other issues! Here is a potential fix:
Make sure you have “Normal” set in “Game Update Delivery” in your Lunar Client Settings!!
If you still get a version that contains “refactor/rendering_api” then you need to wait for Lunar to update and fix everything! Note: This issue doesn’t have to do with any MCCI Modpack!
For example: