Description:
When typing in Writer the text fills the visible screen and already written text should jump up and empty space for 3-4 lines should show on the bottom of the screen. At this moment the cursor freezes for 2-3 seconds before written text jumps upwards and new free space appears. The program however accepts further typing and what has been written in this freeze will show up. 
Using zoom to optimal.

Steps to Reproduce:
1. get new empty document
2. switch zoom to optimal
3. type till the end of visible area

Actual Results:
1. get new empty document
2. switch zoom to optimal
3. type till the end of visible area
4. cursor freeses for a while

Expected Results:
4. cursor should jump to new line and new empty space should appear immediately.


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 7.0.0.3 (x64)
Build ID: 8061b3e9204bef6b321a21033174034a5e2ea88e
Vlákna CPU: 8; OS: Windows 10.0 Build 18363; Vykreslování UI: Skia/rastr; VCL: win
Locale: cs-CZ (cs_CZ); UI: cs-CZ
Calc: threaded