Syncthing: Syncthing does not use correct folder

[VBMCBoy]

When receiving a folder from another device, choosing a folder does not actually select that folder on disk. E.g. when receiving a folder called "example", and choosing "\~/Documents/example" as location, the directory is actually synced to "\~/example" instead.

corresponding log output:

2020-01-28T19:00:01.3057264+01:00: 
Unexpected folder "Camera" (lg-h815_kw59-photos) sent from device "...-MU6YUQ6"; ensure that the folder exists and that this device is selected under "Share With" in the folder configuration.

2020-01-28T19:01:05.582940525+01:00: 
Adding folder "Camera" (lg-h815_kw59-photos)

2020-01-28T19:01:05.58302048+01:00: 
No stored folder metadata for "lg-h815_kw59-photos": recalculating

2020-01-28T19:01:05.583479237+01:00: 
Connection to ...-MU6YUQ6 at [fe80::22d9:aae5:b71f:92ba%wlp5s0]:22000-[fe80::7af8:82ff:fece:1908%wlp5s0]:37405/tcp-server/TLS1.3-TLS_AES_128_GCM_SHA256 closed: reading length: read tcp [fe80::22d9:aae5:b71f:92ba%wlp5s0]:22000->[fe80::7af8:82ff:fece:1908%wlp5s0]:37405: use of closed network connection

2020-01-28T19:01:05.590758817+01:00: 
Ready to synchronize "Camera" (lg-h815_kw59-photos) (sendreceive)

2020-01-28T19:01:13.257561575+01:00: 
Completed initial scan of sendreceive folder "Camera" (lg-h815_kw59-photos)

2020-01-28T19:02:02.510558394+01:00: 
Established secure connection to ...-MU6YUQ6 at [fe80::22d9:aae5:b71f:92ba%wlp5s0]:22000-[fe80::7af8:82ff:fece:1908%wlp5s0]:37414/tcp-server/TLS1.3-TLS_AES_128_GCM_SHA256

2020-01-28T19:02:02.510716539+01:00: 
Device ...-MU6YUQ6 client is "syncthing v1.3.3" named "LG G4" at [fe80::22d9:aae5:b71f:92ba%wlp5s0]:22000-[fe80::7af8:82ff:fece:1908%wlp5s0]:37414/tcp-server/TLS1.3-TLS_AES_128_GCM_SHA256

2020-01-28T19:02:02.518604676+01:00: 
Device ...-MU6YUQ6 folder "Camera" (lg-h815_kw59-photos) has mismatching index ID for us (0xC79690335B78EF05 != 0xF5320D1F85FDC121)

2020-01-28T19:02:02.518630333+01:00: 
Device ...-MU6YUQ6 folder "Camera" (lg-h815_kw59-photos) has a new index ID (0x5A36F71183EB9ADC)

Screenshots:
Adding a folder called Camera to /run/media/kay/..../Backup...

Instead adds it to /home/kay/Camera

Version Information

receiving end

Syncthing Version: v1.3.3
OS Version: Arch Linux

sending end

Syncthing Version: v1.3.3
OS Version: Android 9
(however the same bug happens when sending from another Arch Linux computer with v1.3.3

[AudriusButkevicius]

I don't know where that select folder button comes from but that's not a button syncthing provides, that's most likely the cause.

[calmh]

Yeah this does not look like stock Syncthing. Can you reproduce using the regular Syncthing UI? If so, yell to reopen.

[VBMCBoy]

I just tried it in Firefox and there the button does not appear (and typing in the path works), so apparently when viewing the UI in syncthingtray (using its internal browser) it adds that button. So I guess that is just a problem with syncthingtray. I didn't know that it would do that, otherwise I would've added that information to the issue.
I'm very sorry if I caused any confusion, I should've tried it in a normal browser too. Thank you very much for your time.