Bug Constant data corruption in Text Component (maybe more)

I'm not sure when this happens, but recently I faced the issue that data inside of Text Component randomly changed or missing.

The most common cases were the missing font and text data and eventually, the text goes invisible. Especially text inside of the button keeps disappearing.

This issue is not only caused by a specific version because I using 4 different versions and it happens from all these versions: 5.6.1, 2017.4, 2018.1, 2019.1.

I can sure that I didn't edit it, because this is not the first time happens, also I'm 100% didn't touch the scene at all because it's already completed scene and nothing updated recently.

This is the original font data in the scene:

Code (CSharp):

1.   m_FontData:
2.     m_Font: {fileID: 12800000, guid: 2aaece000d5e62d42ae59237e54e7527, type: 3}
3.     m_FontSize: 32
4.     m_FontStyle: 0
5.     m_BestFit: 0
6.     m_MinSize: 2
7.     m_MaxSize: 40
8.     m_Alignment: 4
9.     m_AlignByGeometry: 0
10.     m_RichText: 0
11.     m_HorizontalOverflow: 0
12.     m_VerticalOverflow: 0
13.     m_LineSpacing: 1
14.   m_Text: Buy (1G)

And this is corrupted data:

Code (CSharp):

1.   m_FontData:
2.     m_Font: {fileID: 0}
3.     m_FontSize: 4
4.     m_FontStyle: 0
5.     m_BestFit: 64
6.     m_MinSize: 4
7.     m_MaxSize: 4
8.     m_Alignment: 533
9.     m_AlignByGeometry: 64
10.     m_RichText: 131
11.     m_HorizontalOverflow: 533
12.     m_VerticalOverflow: -1250131760
13.     m_LineSpacing: 7.47e-43
14.   m_Text:

You can see that the font family was missing and lots of data changed, like m_Alignment: 533.

Also I there was a similar issue with using the layout group component. I'm using the Grid Layout Group component, but the all data inside of the Grid Layout Group component was reset even I didn't touch at all. I reported UI broken from one of my users, and I swear I never touched Grid Layout Group Component at all.

I'm using Layout Group components and these components keep making changes in the scene even I didn't touch at all, mostly floating point issues, so it is really hard to know when those kinds of data corruption happen.

This is really annoying glitch, and I faced this problem very many times recently.

 

Yes, I'm using Git for version control. I just found the commit where this happens, and it happened when I imported the Facebook SDK package. I downloaded from here very recently: https://developers.facebook.com/docs/unity/

And didn't do any extra works, only added Facebook SDK. I attached the screenshot captured from Github. But I'm not sure this is a Facebook SDK related issue, because I mentioned earlier this happened a lot already.

 

@DiegoDePalacio

The same happens again today. In this time, after import Facebook SDK, Sprite Atlas data was corrupted.

Only I did is just import custom package -> Facebook, and just git commit.

Download from here: https://developers.facebook.com/docs/unity/downloads/

Used Imported 7.21.1.