What did you expect to happen?
For company suggestions to stick around after the quick-help shows up (in emacs-lisp-mode).
What actually happened?
They, they, ... _*hic_, they disappeared! :sob:
Additional details:

*Messages* but here it is:
Battery status not available
Loading /home/tec/.config/doom/.custom.el (source)...done
‘def-package!’ was renamed to ‘use-package!’; use that instead.
Applying colors:
((0 . #23262F) (1 . #FE655B) (2 . #7AC174) (3 . #FBCD7A) (4 . #50AEEE) (5 . #A890F0) (6 . #5BEEFE) (7 . #BAC1CE) (8 . #61676D) (9 . #FE655B) (10 . #7AC174) (11 . #FBCD7A) (12 . #50AEEE) (13 . #A890F0) (14 . #5BEEFE) (15 . #BAC1CE))
Successfully applied colors!
Doom loaded 318 packages across 57 modules in 0.898s
Loading /home/tec/.emacs.d/.local/cache/recentf...done
Wrote /home/tec/.emacs.d/.local/cache/undo-tree-hist/.!home!tec!.orhc-bibtex-cache.~undo-tree~.zst
Entities are now displayed as UTF8 characters
Starting new Ispell process hunspell with en_GBs_au_SCOWL_80_0_k_hr dictionary...
Buffer has been modified; could not load undo-tree history
Mark set
eldoc error: (void-function org-get-outline-path)
Using vacuous schema
Automatic display of crossref information was turned on
Mark set [2 times]
Type "q" to delete help window.
Searched 0/1 files
Searched 1/1 files
Wrote /home/tec/.emacs.d/.local/cache/undo-tree-hist/.!usr!share!emacs!26.3!lisp!subr.el.gz.~undo-tree~.zst
Searched 0/1 files
Searched 1/1 files
Mark set [5 times]
Steps to reproduce:
emacs-lisp-mode bufferSystem information:
emacs version 26.3
features XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GSETTINGS GLIB NOTIFY GNUTLS LIBXML2 FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS XWIDGETS LIBSYSTEMD
build Oct 05, 2019
buildopts (--prefix=/usr --build=x86_64-solus-linux --libdir=/usr/lib64 --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var --libexecdir=/usr/lib64/emacs --with-modules --with-xwidgets --with-x-toolkit=gtk3 'CFLAGS=-mtune=generic -march=x86-64 -g2 -O2 -pipe -fPIC -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fstack-protector-strong --param ssp-buffer-size=32 -fasynchronous-unwind-tables -ftree-vectorize -feliminate-unused-debug-types -Wall -Wno-error -Wp,-D_REENTRANT' 'LDFLAGS=-Wl,--copy-dt-needed-entries -Wl,-O1 -Wl,-z,relro -Wl,-z,now -Wl,-z,max-page-size=0x1000 -Wl,-Bsymbolic-functions -Wl,--sort-common')
windowsys x
daemonp server-running
doom version 2.0.9
build HEAD -> develop c049ada61 2020-03-11 00:57:44 -0400
dir ~/.config/doom/
system type gnu/linux
config x86_64-solus-linux-gnu
shell /bin/zsh
uname Linux 5.5.7-150.current #1 SMP PREEMPT Wed Mar 4 03:31:00 UTC 2020 x86_64
path (~/.local/bin /opt/SageMath ~/.pyenv/bin ~/.cargo/bin /sbin /bin /usr/sbin /usr/bin /usr/local/bin /snap/bin /usr/lib64/emacs/emacs/26.3/x86_64-solus-linux/)
config envfile envvar-file
elc-files 181
modules (:completion (company +childframe) (ivy +icons +prescient) :ui doom doom-dashboard doom-quit hl-todo modeline nav-flash ophints (popup +all +defaults) pretty-code (tabs +centaur-tabs) treemacs vc-gutter vi-tilde-fringe (window-select +numbers) workspaces zen :editor (evil +everywhere) file-templates fold (format +onsave) multiple-cursors rotate-text snippets :emacs (dired +icons) electric (ibuffer +icons) vc :term vterm :checkers syntax spell grammar :tools ansible debugger (eval +overlay) (lookup +dictionary +docsets) lsp magit make pdf rgb upload :lang data emacs-lisp ess (javascript +lsp) (latex +latexmk +cdlatex) ledger markdown (org +dragndrop +jupyter +pandoc +gnuplot +present) (python +lsp) (rust +lsp) sh web :config literate (default +bindings +smartparens))
packages ((some-package) (another-package :recipe (:host github :repo username/repo)) (this-package :recipe (:host github :repo username/repo :files (some-file.el src/lisp/.el))) (builtin-package :disable t) (builtin-package :recipe (:nonrecursive t)) (builtin-package-2 :recipe (:repo myfork/package)) (builtin-package :recipe (:branch develop)) (company-tabnine :recipe (:host github :repo TommyX12/company-tabnine :files (company-tabnine.el fetch-binaries.sh))) (prettify-utils :recipe (:host github :repo Ilazki/prettify-utils.el)) (rotate) (xkcd) (selectric-mode) (wttrin) (spray) (theme-magic) (flyspell-lazy) (calctex :recipe (:host github :repo johnbcoughlin/calctex :files (.el))) (ess-view) (systemd) (org-pretty-table-mode :recipe (:host github :repo Fuco1/org-pretty-table)) (ox-gfm) (org-ref) (org-fragtog) (org-graph-view :recipe (:host github :repo alphapapa/org-graph-view)) (org-chef))
unpin (n/a)
elpa (n/a)
I can confirm this. This just happens (at least for me) using lisp-mode.
Same here. If I disable company-box-doc-enable suggestion won't disappear without the Documentation window.
Same problem occurs in different modes.

Maybe it's obvious, but for search purposes this issue exists only for (company +childframe) which uses company-box, which seems to be abandoned. (Last commit over a year ago, while several PRs and issues have been piling up.)
@hlissner
I suggest to label this has:workaround or that the +childframe sets company-box-doc-enable to nil.
Sorry, maybe I'm blind, but what's the workaround?
Sorry, maybe I'm blind, but what's the workaround?
set company-box-doc-enable to nil.
Wait, so the workaround to a feature not working, is to turn off the feature?
My understanding is that the feature is company suggestions. They disappear due to quick-help being enabled and the library responsible for quick-help not being actively maintained.
Therefor the workaround to get the feature of not having broken company completion/suggestions is to disable the quick-help popup. Another alternative to not having broken company completion is not to use +childframe and therefor skipping the unmaintained company-box library.
I had to set it nil once I knew it. (setq company-box-doc-enable nil) The problem is if I use C-h on a suggestion, the same problem occurs again: the company box disappears. Btw, this also happens on different modes as well (e.g. sml-mode). I think it is not specific to emacs-lisp-mode.
Thanks to dinkonin on Discord I've zeroed in on the cause of this issue. As of 7e40c1e this should be resolved. It should be safe to re-enable company-box-doc-enable. Let me know if that isn't the case and I'll reopen it. Thanks for bringing it to my attention!
it is fixed! thanks!
Most helpful comment
Thanks to dinkonin on Discord I've zeroed in on the cause of this issue. As of 7e40c1e this should be resolved. It should be safe to re-enable
company-box-doc-enable. Let me know if that isn't the case and I'll reopen it. Thanks for bringing it to my attention!