I am facing a very similar issue. I noticed that my apps were being randomly offloaded after upgrading to iOS 11.2.1, the only difference is that all my apps appear as "never used", rather than showing a wrong date.
Apple Support made me reset a few settings and erase/restore from backup but no difference. Their conclusion was that something in my data was corrupted, although I'm skeptical since a few other people clicked on the "I have this question too" on my thread.