Shift-Tab Not Working

[ITFlip]

Pressing the Tab key tabs to the right as expected.
Pressing Shift-Tab also tabs to the right when it should tab to the left (as per the printing on my keyboard).

Does Ctrl-Shift-M do the same thing?
Thanks!

[SuperTech]

Thank you for your report. Could you please let us know where exactly you are pressing Shift+Tab — for example, inside a table, in a bulleted/numbered list, or in regular body text? The expected behavior differs depending on the context:

• In a table: Tab moves to the next cell, and Shift+Tab should move to the previous cell.
• In a numbered list: Tab increases the indent level, and Shift+Tab should decrease it.
• In regular text: Shift+Tab behaves the same as Tab and inserts a tab character.

Regarding Ctrl+Shift+M — in TextMaker, this decreases the left paragraph indent, which is a different action from Shift+Tab. So no, it does not do the same thing.