When the slider was first released this wasn’t an issue, but it was like a week later. The textbox where you can type in your transparency goes back 3 decimal points and has room for 3-4 more decimal points, yet they’ll be cut off if you type them in anyways. It takes from the slider-space which is already really sensitive since it’s small.
Solution: Halve the size of the Transparency Textbox and use the free space for the slider! I run a 4k ultrawide monitor and it’s a shame that little things like this still degrade the experience.