Steps to Reproduce:
--Install Bopomofo or Quick input method (Traditional Chinese).
--Open the Telerik SyntaxEditor in a WPF application.
--In any text input field, enter an Alt code (e.g., Alt+0160 for a non-breaking space).
--Attempt to type any Chinese characters immediately after entering the Alt code.

Current Behavior:
  -Bopomofo IME:
    -- The user cannot type any Chinese characters after entering an Alt code.
    -- Switching the language (e.g., pressing Shift) allows English input, but Chinese input remains blocked.

Quick IME:
   -The input method automatically switches to English after entering an Alt code.
   -The language indicator still shows Chinese, but characters typed are in English.
   T-o resume Chinese input, the user must click another text field, alt-tab to another window, then return.

Expected Behavior:
   -Users should be able to continue typing Chinese characters after entering Alt codes without needing to manually switch inputs.
   -The IME state should remain consistent, allowing uninterrupted input.

When the EditorFontFamily is set to SegoeUI the RadSyntaxEditor can be placed over letters when changing it position.

When using XML Tagger, XML Folding tagger with XML text document, the folding tagger freezes the UI while typing.
Generally in Visual Studio, the XML Folding tagger is processed in background while in SyntaxEditor this is done on the UI thread.
Several optimization options might be applied:

    - process xml folding in background

    - process folding similar to process search while typing - a period of inactivity time is needed to invalidate the search / folding

   - caching - if the edit does not change the folding configuration, no processing and redrawing of folding is required

  - some parts for extracting tooltip content and folded content should be optimized

Foldings are incorrect when there is a missing open or close tag.