App Version: 58.0.3029.6 
iOS Version: 10.3, 9.3.5
Device: iPhone7, iPad Air
URL: any

Steps to reproduce:
  1. Launch Google Chrome
  2. Open any wikipedia article
  3. Add page to reading list
  4. Turn ON airplane mode
  5. Open New tab, and open the offline page from Reading List
  6. Tap Menu button

Observed results: Find In Page is disabled

Expected results: Find In Page should be enabled

Number of times you were able to reproduce: 5/5
Bug reproducible after clean install: Yes
Bug reproducible after clearing cache and cookies: Yes
Bug reproducible on Chrome Mobile on Android: NA
Bug reproducible on Safari/Firefox: Firefox: NA, Safari: NA
Bug reproducible on current stable build (App Version, iOS Version): M56 No (New feature)
Bug reproducible on the current beta channel build (App Version, iOS Version): M57 Yes

Link to video/image: https://drive.google.com/file/d/0B-xmXLQhjeKuOWlfbXoyWTExcEE/view