Indentations in modules

If I hit the tab key, the cursor just jumps to the next field. So I have to space the indentations. When I do, they look right to me. Does it make a difference in the performance of the module?

They don't look right to everyone, and according to WT:Coding conventions, tabs are to be used throughout all modules. I get a tab when I type tab, so I'm not sure why it's different for you.

The only way I can get tabs is to copy and paste from another application, such as MS Word. Which is doable, but a rather frustrating workaround.

FWIW, I get the same behavior as Mahāgaja mentions -- hitting the tab key just causes the cursor to jump from the main editing textbox to the Edit summary textbox. I cannot enter a tab at all in any Wiktionary edit field. The only way I can enter a tab is to copy-paste from some other application.

Could it be that I'm using the special module editor? I get the behaviour you describe when editing normal pages, but I don't need to type tabs there. When editing modules, I can type tabs.

That must be it.