Bug? [B4X]BBCodeView Url Auto-Underline Oddities

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("1")
    TextEngine.Initialize(Root)
    TextEngine.TagParser.UrlColor = 0x228b22    'breaks auto underline, except for line4 which has same color as Url color
'                        the underline is still there (it can be seen in letters such as gjqp) but is the background color (or transparent).
    BBCodeView1.TextEngine = TextEngine
    
    'Without line6 the auto underline works only for line1 and line5
    'With line6 the auto underline works as expected for all lines
    BBCodeView1.Text = _
$"
line1: this is [url]some phrase[/url] and more
line2: this is [url][b]some link2[/b][/url] and more
line3: this is [url]link3[/url] and more
line4: this is [url][color=#228b22]link4[/color][/url] and more
line5: this is [url]some phrase[/url] and more
line6: [Span MinWidth=0%x] [/Span]
"$
End Sub

TextEngine.TagParser.UrlColor = 0xFF228b22

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1
    Root.LoadLayout("1")
    BBCodeView1.TextEngine = TextEngine
    
    'Without line6 the auto underline works only for line1 and line5
    'With line6 the auto underline works as expected for all lines
    BBCodeView1.Text = _
$"
line1: this is [url]some phrase[/url] and more
line2: this is [url][b]some link2[/b][/url] and more
line3: this is [url]link3[/url] and more
line4: this is [url][color=#228b22]link4[/color][/url] and more
line5: this is [url]some phrase[/url] and more
line6: [Span MinWidth=0%x] [/Span]
"$
End Sub