Steps how to reproduce with installation of unofficial (by wg9s) De SeaMonkey 2.53.3beta 1 pre Mozilla/5.0 (NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0 Build 20200510220906 (Default Classic Theme, newly created User Profile) on German WIN7 64bit

1. Browser → F1
   » Help appears
2. Type search string "Sicherheitseinstellungen" → Click first hit "Sicherheitseinstellungen"
   » Related Help appears
   Expected; more chapters for "User Tracking" , "Location Aware Browsing", "Safe Browsing"
   Actual: Help text ends below TOC "Verwandte Themen: " 😥

Additional Info:

a) Comparing size (for 2.53.2)

• en-US 13kB
• DE 2 kB
  b) Spanish and may be other Language Packs (2.53.3) with real translation are not affected.
  c) Finnisch and may beother Language Packs (2.53.3) in English langaguage are affected with the same problem
  d) If it's only a "missing translated text" problem I can contribute a translation as plain text.
  e) German Translation for that text already missing in 2.49 and 2.39