On February 9, MetaQuotes has silently released a hotfix for MT4 platform - Build 1049. There was no official announcement about the release, but it looks like it fixes the timeframe switching bugs that occurred in Build 1045. The update should be available from your broker's trading server.
If you find some bug or want to share your impression about the latest MT4 build, please post below.
If you find some bug or want to share your impression about the latest MT4 build, please post below.