Description:
After upgrading to libreoffice Version: 6.1.3.2 (x64)on windows 10, formula does not display correctly 




Steps to Reproduce:
1. open libreoffice
2. clic on the math formula icon
3. type the formula 
K_t = {1} over {sqrt{left (1 over {0,88 Kp} right )^2+ left (1 over {0,843 Kq} right )^2} +1

other example with the formula 

K_p = sqrt{{{t over r} cdot {{d over D} over {1 – {d over D}}} + 1}} -1

see the result....


Actual Results:
on the first example the parenthesis on the denominator are too high 

on the second example the square root are cutting characters in the formula 

Expected Results:
formula correctly displayed


Reproducible: Always


User Profile Reset: Yes



Additional Info:
i have download libreoffice portable (see below for version)

i have saved the file created with the installed version, close libreoffice, launch libreoffice portable version and open the file i have saved

display is incorrect (picture is not recalculated)

if i open the maths formula by double clicking on it on the portable version, formula take immediately the good shape

going to work with portable version for the moment

note : 
i can't install opengl checker (i'm not admin of my computer), but my computer use opengl for other softwares (catia for example) 

Buggy version (installed on my computer) 
Version: 6.1.3.2 (x64)
Build ID: 86daf60bf00efa86ad547e59e09d6bb77c699acb
Threads CPU : 8; OS : Windows 10.0; UI Render : par défaut; 
Locale : fr-FR (fr_FR); Calc: group threaded

portable version (it works fine with it) 
Version: 6.1.2.1
Build ID: 65905a128db06ba48db947242809d14d3f9a93fe
Threads CPU : 8; OS : Windows 10.0; UI Render : GL; 
Locale : fr-FR (fr_FR); Calc: CL