Unable to save build (PoB is using / instead of \ before the filename)

Check version

• I'm running the latest version of Path of Building and I've verified this by checking the changelog

Check for duplicates

• I've checked for duplicate issues by using the search function of the issue tracker

What is the expected behaviour/value?

After importing a Pastebin URL into a new build, I should be able to save/save as the build.

What is the actual behaviour/value?

After clicking the save/saveas button and entering a filename, I get the following error:

Couldn't save the build file:
C:\Users\smoker\Dropbox\Home\Games\Path of Exile\Character Builds/tempi.xml
Make sure the save folder exists and is writeable.

How to reproduce the issue

• Import a pastbin URL into a new build (I'm using https://pastebin.com/qMmKksb6)
• Click either the Save or SaveAs button at the top of PoB
• Enter a filename (I'm using "temp")
• Click the Save button

Character build code

https://pastebin.com/qMmKksb6

Screenshots

https://imgur.com/a/Q9WbKcK

未指定源文件或测试。复现 Pastebin 导入，然后在 Windows 上尝试 Save 和 Save As，并跟踪 build 文件名与保存文件夹组合的位置。当导入的 build 能够使用一致的 Windows 路径分隔符成功保存时，即表示完成。