[Solved] TechDraw Page Views And Page Gets Corrupted

[mendy]

OS: Ubuntu 20.04.2 LTS (MATE/mate)
Word size of FreeCAD: 64-bit
Version: 0.20.24847 (Git) AppImage
Build type: Release
Branch: master
Hash: 20e756306d9aa624fcbf465f0345d721673ce720
Python version: 3.9.2
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.1
Locale: English/United States (en_US)

Hello
Was dimensioning views on a page when all of a sudden they were lost and rectangular boxes showed up. Data Property shows correct zoom and Caption. Unable to enter new views in Page Right After Failure but added new page Page Added After Failure and can enter views in it.
Views 009 and 010 are the same just switching pages.
At time of failure the dimensions were showing as 0.00 instead of correct dimension.
Had a similar failure once before and just redid page. Am I doing something wrong? Just going to redo the page, probably do more frequent backups while doing so. Haven't really had a problem.

Secondary quetions
In Radius Bar when I select Set To Right View I can see the Pocket on other end but if I rotate slightly it dissapears which from reading might be Ok possibly from drivers.
Searched on Tree Icons Overlay and could not find the double red arrows on Page Right After Failure.

[Roy_043]

See TechDraw_PageDefault.

[mendy]

Thank you, was searching for wrong item in tree. My preference settings were correct and page settings was false. Have no idea how or when it got changed. Doesn't seem to be one click change.
Changed to true and views showed up. Added view ok. Switched to false and added a dimension and it showed 0.00.
Thank you again.

[mendy]

Don't know how it got changed, but also missed the Button. Your post fixed.
I tried pressing the Recompute icon. Then found the Redraw Page button which temporarily refreshes the page with the property set to false.
Keep learning every day.