TOF Convertor menu appears compressed in high resolution machines

[MohamedAlmaki]

Describe the bug

When opening the TOF converter interface, it appears too minimized, making it unusable.
To Reproduce

You need a high resolution machine to replication the issue

1. Go to interfaces->utility->TOF convertor
2. The window will appear small and unusable

Expected behavior

It should appear in normal size with adjustable dimensions Screenshots

Platform/Version (please complete the following information):

• OS: [e.g. Windows, RHEL 7, Ubuntu, macOS] Windows
• OS Version: 10
• Mantid Version [e.g. 6.0.0] 6.10.rc1

[jclarkeSTFC]

Is this the same in 6.9.1?

[MohamedAlmaki]

Yes, it is not a regression bug