Electrum fails to open wallet file from a Cryptomator volume with capital letter in the path

Title:
Electrum fails to open wallet file from a Cryptomator volume with capital letter in the path

Description:
On Windows, Electrum fails to open (browse) existing&valid wallet file from an unlocked Cryptomator volume when the path contains a Capital letter (at any position).

Details:
Drive D: - physical SSD, not encrypted
Drive V: - Cryptomator, Dokany/Dokan, encrypted, unlocked drive

D:\lowercase\wallet - works
D:\Uppercase\wallet - works

V:\lowercase\wallet - works
V:\Uppercase\wallet - Doesn't work (This file does not exist message is shown)
V:\withCapital\wallet - Doesn't work (This file does not exist message is shown)
V:\lowercase\capitalInpath\wallet - Doesn't work (This file does not exist message is shown)

Additional information:
Windows 7 x64 (fully patched)
Cryptomator 1.4.15 (latest)
Electrum 3.3.8 (latest, installed)
wallet - Standard, encrypted

While in the mounted/decrypted state, Cryptomator volume shows as Cryptomator File System:

The How it works section of dokany describes the file system implementation in more detail:

Steps to reproduce:

1. Install Cryptomator on Win7 x64
2. Create a new Dokany vault
3. Unlock Cryptomator volume
4. Create a new Electrum encrypted wallet
5. Close Electrum
6. Create "Uppercase" folder on the Cryptomator volume
7. Copy Electrum wallet into "Uppercase"
8. Start Electrum and browse to the wallet on the Cryptomator volume (section 7)
9. This file does not exist message will show

Screenshots:

Edit:
Added more info about dokany

The report names no source files, tests, or entry points. Start by reproducing the browse failure on a Cryptomator/Dokany volume with a capitalized path, then trace the wallet file selection and path-existence check; done means an existing wallet opens successfully from that path.