Description:
When I want to search of a document saved previously in Writer or Calc or Impress using the search box in the <Save As> menu, I never get back the correct result.

If I go in the correct folder where the file is, I will get the result but in the meantime the keyboard will strut. 

If I'm not in the correct folder, which is the goal of a search box (find your data from anywhere) I will not get the right result.

During the search experience the keyboard strut in addition.

Steps to Reproduce:
1.Create a document (whatever the name), call it ABC ou DEF, using Libre Office. 
2.Save that document somewhere on your hard disk driver.
3.Then open the tab "Save As" in the menu Files of Writer, Calc or Impress.
4.Click on the symbol the make a search, a magnifying glass on Ubuntu.
5.Type the name of your file 

Actual Results:  
1.The keyboard strut.
2.I don't get the right result.

Expected Results:
I expect the get the right result and from anywhere on my computer not just when I'm in the right folder, where my document is.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Keyboard strut during the search experience (Files> Save As > + click on magnifying glass).

marco@marco-K43SJ:~$ glxinfo | grep OpenGL
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GT 520M/PCIe/SSE2
OpenGL core profile version string: 4.6.0 NVIDIA 390.48
OpenGL core profile shading language version string: 4.60 NVIDIA
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.6.0 NVIDIA 390.48
OpenGL shading language version string: 4.60 NVIDIA
OpenGL context flags: (none)
OpenGL profile mask: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 NVIDIA 390.48
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile ex


User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0