Cannot start WindTerm on Ubuntu 18.04

When I try to run the binary, this happens:

```
roland@Ubuntu1804:~/Downloads/WindTerm_2.5.0$ ./WindTerm
bash: ./WindTerm: Permission denied
```

The execute flag is set, but a strange file is also created.

```
roland@Ubuntu1804:~/Downloads/WindTerm_2.5.0$ ls -la
total 9988
drwxr-xr-x 6 roland roland 4096 Sep 22 08:44 .
drwxr-xr-x 20 roland roland 36864 Sep 22 08:42 ..
drwxr-xr-x 5 roland roland 4096 Jul 24 18:46 global
drwxr-xr-x 10 roland roland 4096 Jul 24 18:46 lib
-rw-r--r-x 1 roland roland 35147 Jul 23 23:31 license.txt
-rw-r--r-x 1 roland roland 26 Nov 29 2021 qt.conf
drwxr-xr-x 7 roland roland 4096 Jul 24 18:47 terminal
drwxr-xr-x 3 roland roland 4096 Jul 24 18:47 vendors
-rw-rw-r-- 1 roland roland 0 Sep 22 08:44 ''$'\001\330''vL@7'$'\232''@8'
-rw-r--r-x 1 roland roland 10108608 Jul 24 02:49 WindTerm
-rw-r--r-x 1 roland roland 414 Feb 13 2022 windterm.desktop
-rw-r--r-x 1 roland roland 12109 Feb 11 2022 windterm.png
```

Start by reproducing the reported ./WindTerm launch failure on Ubuntu 18.04 using the WindTerm_2.5.0 directory and compare the listed file permissions with the generated filename. Investigate the binary launch path and the cause of the unexpected file. Done means the distributed binary starts successfully and no unexpected file is created.

Written by the indexing model from the issue text.