vim/ycm long completion popup squished by long menu

index.ts

// Put cursor v there and wait until YCM+tsserver has initialized
const x = [].

package.json

{
  "name": "vim-ycm-completion-issue",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "vim -u vimrc index.ts -c 'setf typescript'"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "typescript": "^3.7.4"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es6",
    "allowJs": true,
    "moduleResolution": "node",
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "allowSyntheticDefaultImports": true,
    "downlevelIteration": false,
    "experimentalDecorators": true,
    "suppressImplicitAnyIndexErrors": true,
    "lib": [
      "es2015",
      "es2016",
      "es2017"
    ]
  },
  "exclude": [
    "node_modules"
  ]
}

vimrc.vim

set nocompatible

" Load YCM somehow
let $VIMHOME = $HOME."/.vim"
call plug#begin($VIMHOME . '/bundle')
Plug 'Valloric/YouCompleteMe', { 'do': './install.py' }
call plug#end()

syntax on

set backspace=indent,eol,start
set completeopt=longest,menu,popup

let g:ycm_semantic_triggers = {
  \ 'javascript': [ 're!([ ;] |\t|: |@)' ],
  \ }