diff --git autoload/ale/cursor.vim autoload/ale/cursor.vim
index 8c331c5..edb99e2 100644
--- autoload/ale/cursor.vim
+++ autoload/ale/cursor.vim
@@ -136,8 +136,7 @@ function! s:ShowCursorDetailForItem(loc, options) abort
 
     let s:last_detailed_line = line('.')
     let l:message = get(a:loc, 'detail', a:loc.text)
-    let l:lines = split(l:message, "\n")
-    call ale#preview#Show(l:lines, {'stay_here': l:stay_here})
+    call ale#util#ShowMessage(l:message)
 
     " Clear the echo message if we manually displayed details.
     if !l:stay_here
diff --git autoload/ale/util.vim autoload/ale/util.vim
index 99cd856..cf46136 100644
--- autoload/ale/util.vim
+++ autoload/ale/util.vim
@@ -21,15 +21,7 @@ function! ale#util#ShowMessage(string) abort
         call ale#preview#CloseIfTypeMatches('ale-preview.message')
     endif
 
-    " We have to assume the user is using a monospace font.
-    if has('nvim') || (a:string !~? "\n" && len(a:string) < &columns)
-        execute 'echo a:string'
-    else
-        call ale#preview#Show(split(a:string, "\n"), {
-        \   'filetype': 'ale-preview.message',
-        \   'stay_here': 1,
-        \})
-    endif
+    call popup_atcursor(split(a:string, "\n"), {'border':[], 'moved': 'any'})
 endfunction
 
 " A wrapper function for execute, so we can test executing some commands.