The tooltips error when the quest that has the relevant objective is in a category that is collapsed in the quest log. (Categories remain collapsed when the quest log is closed)

"QuestieAstro.lua:406: Usage: SelectQuestLogEntry(index)

This is fixed by this point (I THINK)

That same error isn't entirely linked to a collapsed category. I had the same problem with shift+clicking a random quest.

Maybe we could replace that code with:

QuestLog_SetSelection(id)
QuestLog_Update();

The hook for quest tracking (shift+click) also should NOT be calling the original hooked function (ONLY for EQL3!). But currently it does exactly that, which is going to lead to errors.

_QuestLogTitleButton_OnClick(button);
EQL3_QuestWatchFrame:Hide();

Needs to happen INSIDE the EQL3 conditional block. Also, the EQL3 block needs that IsShiftKeyDown() block removed, as calling the original function already does all that.