Created attachment 81404 [details]
document to use for reproducing the bugs

I've reported these as a single bug - apologies if you prefer separate reports.  Summary: the bugs are in:

Paragraph Style
  Font
    Size        (bug 1)
    Font        (bug 1)
    Style       (bug 1)
  Font Effects
    Effects     (bug 2)
    Font colour (bug 2)
    Outline     (bug 2)
    Shadow      (bug 2)
    Blinking    (bug 2)
    Hidden      (bug 2)
    Underlining (bug 3)

There are work-arounds to all of these apart from Underlining (bug 3).

BUG 1: Font with Size (and Font and Style)
- open the attached document
- right-click on line 4 (the header "Similarities")
- from popup menu, chose "Edit Paragraph Style..."
- select "Font" tab in "Paragraph Stype: Heading 2" window
- change "Size" from "14pt" to "11pt" and click "Apply"
- smaller font is used in the Paragraph Style window preview and the corresponding Header 2 text in the document.  Yay!
- change "Size" from "11pt" to "14pt" and click "Apply"
- smaller font is used in the Paragraph Style window preview but NOT the corresponding Header 2 text in the document.  This is a bug.
Interestingly...
- click on "OK" in the "Paragraph Stype: Heading 2" window
- right-click on line 4 (the header "Similarities")
- from popup menu, chose "Edit Paragraph Style..."
- select "Font" tab in "Paragraph Stype: Heading 2" window
... you can see that the dropdown menu and preview still show the paragraph style has size of 11pt, and now if you change it to 14pt and click "Apply" it will change it in the document too.
Note...
... the bug with Size is also present with Font (eg, change from Arial to Batang, reverting fails as above) and Style (eg, change from Bold Italic to Regular, reverting fails as above).

BUG 2: Font Effects with Effects (and Font color and Outline/Shadow/Blinking/Hidden)
- open the attached document
- right-click on line 4 (the header "Similarities")
- from popup menu, chose "Edit Paragraph Style..."
- select "Font Effects" tab in "Paragraph Stype: Heading 2" window
- change "Effects" from "(Without)" to "Small capitals" and click "Apply"
- small caps appears in the Paragraph Style window preview and the corresponding Header 2 text in the document.  Yay!
- change "Effects" from "Small capitals" to "(Without)" and click "Apply"
- small caps is removed in the Paragraph Style window preview but NOT the corresponding Header 2 text in the document.  This is a bug.
Interestingly...
- click on "OK" in the "Paragraph Stype: Heading 2" window
- right-click on line 4 (the header "Similarities")
- from popup menu, chose "Edit Paragraph Style..."
- select "Font Effects" tab in "Paragraph Stype: Heading 2" window
... you can see that the dropdown menu and preview still show the paragraph style has small caps turned on, and now if you turn it off and click "Apply" it will remove it from the document too.
Note...
... the bug with Effects is also present with Font color (eg, change from Automatic to Green, reverting fails as above) and Outline/Shadow/Blinking/Hidden checkboxes.

BUG 3: Font Effects with Underlining
- open the attached document
- right-click on line 4 (the header "Similarities")
- from popup menu, chose "Edit Paragraph Style..."
- select "Font Effects" tab in "Paragraph Stype: Heading 2" window
- change "Overlining" from "(Without)" to "Single" and click "Apply"
- overlining appears in the Paragraph Style window preview and the corresponding Header 2 text in the document.  Yay!
- change "Strikethrough" from "(Without)" to "Single" and click "Apply"
- strikethrough appears in the Paragraph Style window preview and the corresponding Header 2 text in the document.  Yay!
- change "Underlining" from "(Without)" to "Single" and click "Apply"
- underlining appears in the Paragraph Style window preview but NOT the corresponding Header 2 text in the document.  This is a bug.
Interestingly...
- click on "OK" in the "Paragraph Stype: Heading 2" window
- right-click on line 4 (the header "Similarities")
- from popup menu, chose "Edit Paragraph Style..."
- select "Font Effects" tab in "Paragraph Stype: Heading 2" window
... you can see that the dropdown menu and preview still show the paragraph style has underlining turned on, but however much you try you can't get it to display underlining in the document.