Tooltip window in editor closed unexpectedly in Ubuntu

Hi, I have problem in Java editor, it found only on Ubuntu(may be other Linuxes too) 18.*, 20.*, 22.*.When open tooltip window like following:
1. Alt+[mouse hover] on method then window appears with 3 choices(Open Declaration, Open Implementation, Open return type) then when click on liked choice the window is closed immediatelly without expected bechaviour.
2. Being in debug mode and stoped on breakpoint then [mouse hover] on variable shows tooltip window with variable value, but when want to select some item inside this window then window immediatelly closed
3. When [mouse hover] on method the tooltip window shows javadoc, but if I want to scroll content of this window or select with mouse some text then this window immediatelly closing