1 files changed, 11 insertions, 0 deletions
diff --git a/test/functional/lua/buffer_updates_spec.lua b/test/functional/lua/buffer_updates_spec.lua
index 2fd44b8b5f..b1b39501f7 100644
--- a/test/functional/lua/buffer_updates_spec.lua
+++ b/test/functional/lua/buffer_updates_spec.lua
@@ -317,7 +317,18 @@ describe('lua buffer event callbacks: on_lines', function()
     feed('1G0')
     feed('P')
     eq(meths.get_var('linesev'), { "lines", 1, 6, 0, 3, 3, 9 })
+  end)
 
+  it('calling nvim_buf_call() from callback does not cause Normal mode CTRL-A to misbehave #16729', function()
+    exec_lua([[
+      vim.api.nvim_buf_attach(0, false, {
+        on_lines = function(...)
+          vim.api.nvim_buf_call(0, function() end)
+        end,
+      })
+    ]])
+    feed('itest123<Esc><C-A>')
+    eq('test124', meths.get_current_line())
   end)
 end)