A bug that causes corrupted prefs-file due to simultaneous writes is … #5
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…fixed in this pull request
If one uses multiple setValue calls in his/her application, each call causes async writeAsString call. This can lead to the file corruption. At least I found that effect on Linux Desktop platform.
To solve this problem I propose a delayed write: setValue just create a delayd task for writing. It no other setValue-s are called the writing occures while if new setValue comes the delay shifts a little bit to the future.