Steps
Load the java launcher on macos or windows (I have not tested on Linux)
Have logged in or log in approximately 10 or more accounts
Select (click on) the account selector in the top left of the launcher to change the current account.
Expected result
For the accounts drop down to have a plain obvious scroll bar/pagination/other to easily view all accounts and select the desired account without having to expand the launcher’s window height.
Actual result
The drop down for the account selector in the top left of the launcher disappears into bottom of launcher. The portion that disappears into the launcher becomes hidden and unable to be selected from. In order to access the “View All Accounts” link or select from/view the full list of accounts you must expand the height of the launcher window. See my comment with 3 attached screenshots demonstrating this.
The following 3 screenshots are exact to the window pixel width. The yellow rectangles hide the account names, otherwise the screenshot is pixel to pixel (after jpeg compression).
Minecraft java launcher loaded at default height and width
Showing the account list cut off and disappearing into the bottom of the launcher.
Showing a complete drop down after the window height is expanded. Notice the yellow rectangle is taller since all accounts are shown, the bottom white border is no longer hidden, and the “view all accounts” footer is no longer hidden.