8 digit hex not allowed?

Hi guys
When I open color picker popup and try to add 7th and 8th digit to hex it delete them.
I saw couple of screenshots where there is 8 digit hex filled.
I use 2018.2.16
Is it disabled for some reason or am I doing something wrong?

Hi! Hex digits for alpha were removed in the Color Picker update in Unity 2018.3. The rationale was that the hex field is mostly intended to support copy/paste with other creative software (e.g., Photoshop), which don’t have hex for the alpha channel. If you need to copy/paste within Unity, you can use the RMB context menu on the color’s control in the Inspector. If you have a different use case though please share!