1.9.3: 1. "Open with" issue when XnView is not the default viewer; 2. Unresponsive path bar

[celo]

**XnView Version:** MP 1.9.3 64-bit (Windows) - Libformat 7.226

**OS:** Windows 10 - 64-bit 1809

1. As long as the default association for a file type is not XnView, besides being able to open this picture when right-clicking and selecting XnView in Windows File Explorer, it will pop up a blank browser in other software.
2. The path bar is unresponsive for a long time after startup.

If the associated software (default open method) for a certain image type is not XnView but another image viewer, then in any file browser except Windows File Explorer, right-clicking and choosing "Open with" -> "Select XnView" will not bring up the image viewer (to view the image normally), but rather the home page of the file browser (as if you had just double-clicked the desktop icon to open XnView).
This happens with the file manager Dopus as well, and also with the search tool Everything.
Please fix this.

Also, after opening the XnView browser, the path bar is unresponsive for a very long time. After typing the path you want to navigate to and pressing enter, there is no reaction. Not only does the folder not change, but the path bar also clears the input and reverts to the current path. It only becomes functional after a very long time.

Additionally, will the "floating toolbar being obscured" issue that I reported previously be fixed?