petermad wrote:If the button is placed to the left (InplaceOkButton=2), the 64bit version shows two dots (like a colon) to the right of the button.
I think it is a colon. And I don't think it's a platform specific issue. Lazarus just draws buttons, panels, ... a bit differently, that's why you see this specific symptom in TCx64 and not in TCx32.
Currently, when you start editing a path, on top of its panel, there is a textbox (or whatever) and now also the conformation button drawn. But the path panel (with the original path) is not completely hidden. You can see it and its original text in gaps - between the left border of panel and the textbox, between the textbox and the confirmation button and also between the confirmation button and the panel's right border (default layout).
You can prove it easily: open a directory with a path so long that it will fill up the path panel, double-click on the path panel to start editing it and then move the panel splitter to resize panels. Unlike the path panel, the editable textbox will not resize which will allow you to see the original path behind it.