Texmaker and TeXstudio ⇒ Odd Text Selection over the Keyboard in Version 1.9.1

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I've been using Texmaker for a while and I'm very happy with it! But since the new (1.9.1) Version I can not select more then one letter with the Shift + Arrow-Key commands anymore. This is also true for selecting more then one word with the Apple + Shift + Arrow-Key commands. This is possible in any other editor out there and to me - if willingly changed or not - it is such a serious bug that I can't use Texmaker anymore. Is there a chance to change that? Replacing the new Version with the 1.8 Version did not help so far!

Any help is very much appriciated!