IEView, HTMLView and uLister can not be used together?

[leopoldus]

Can anybody confirm or disprove the following odd behavior of Lister?
When the three plugins - IEView, HTMLView and uLister - are installed and all set to handle .HTML files, Total Commander can not switch by pressing key [4] between the all three of them while viewing the same file, but it switches between the two of them depending of their order in the configuration list.

1. If the order is the following; HTMLView - IEView - uLister, Total Commander/Lister switches between HTMLView and IEView, but skips uLister (the last in order).

2. If the order is IEView - HTMLView - uLister, Total Commander/Lister switches between IEView and uLister, but skips HTMLView (which is located in the list between them).

3. If the order is uLister - IEView - HTMLView, Total Commander/Lister switches between uLister and IEView, but skips HTMLView (which is the last in the list).

4. If the order is uLister - HTMLView - IEView, Total Commander/Lister switches between every of the three.
However it does that only once at the first cycle. If you keep pressing key "4", it continues to switch between HTMLView and IEView only.

NB!
TC makes this trick only in Lister separate window. In QuickView pane it switches between the every of the three plugin.

What could it mean??

[ghisler(Author)]

When you press "4", TC sets the "force" flag to force a plugin to look at a file. Maybe the plugins do not handle this well?

[leopoldus]

2ghisler(Author)

Maybe the plugins do not handle this well?

Which of them? Or all? Have you paid attention, that in different cases I've described TC/Lister omits DIFFERENT plugins?

[ghisler(Author)]

Unfortunately only the plugin authors could check that, sorry.

[nsp]

2ghisler(Author)

Maybe the plugins do not handle this well?

Which of them? Or all? Have you paid attention, that in different cases I've described TC/Lister omits DIFFERENT plugins?

Which of them :
In all the sample you gave, IEView is blocking the next plugin.

[leopoldus]

2nsp

In all the sample you gave, IEView is blocking the next plugin.

Bingo! Very exact remark, thanks.
But the next question: why IEView can pass F4 to the next over one plugin in the circle, but not to the directly next one? That would be logic, if IEView would not call any next plugin at all, but actually it does.