complete menu thumb issue

[epheien]

FAQ

• I have checked the FAQ and it didn't resolve my problem.

Announcement

• I have checked Breaking change announcement.

Minimal reproducible full config

  sources = cmp.config.sources({
    {
      name = 'buffer',
    },
  }),

Description

When the completion menu has exactly 7 items and set pumheight=5, the position of the scrollbar will be incorrect.

Steps to reproduce

abcdefghi
abcdefgh
abcdefg
abcdef
abcde
abcd
abc
ab|

see below image

Expected behavior

scrollbar render normally

Actual behavior

see below image

Additional context