Quartus18.x issue2: lost path to files on project reopen.

Forever offending version is same every platform:

Quartus Prime Version 18.1.0 Build 625 09/12/2018 SJ Lite Edition

This issue is only present at Linux production generated after what is described on first post.

I am installing two new Linux version, Ubuntu as is and Ubuntu Mate that resemble Linux Mint desktop This to real hardware not VM.

I am proud Ubuntu grasped desktop is place where we work not to display unity big icon nor win use for itself.

This laptop:

Boot from partition:

LinuxMint19 ( stand by, porting job postponed)

Actual test: LinuxMint 17.3 (production)

Old Ubuntu 14.x ( or 12.x not used for a while)

VM on this:

Windows XP PRO EN SP2 (Locked to SP2) XP SP3(same version) (unlocked) (Old license to test old sw)

Win7 Pro EN (not locked , actual SP1) Some tools doesn't have Linux equivalence, Terasic, STM32 Motor Suite.

Linux Mint 19

Linux Ubuntu 14

Linux Ubuntu ubuntu-18.04.2-desktop-amd64 (fresh new)

ubuntu-18.04.2-desktop-amd64 MATE (fresh new)

Linux CNC

Linux Centos (expired)

OS2 Warp 4

Windows 98 SE

DOS 6.22

Other special for maintenance.

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Shared office Hardware:

Old PIII dual boot win 98 and XP Pro with parallel port, both ISE and Quartus supporting parallel programmer and old devices (image restorable preservation), ISA device programmer.

Old PIV XP Pro (PCI device programmer, serial parallel port legacy)

multicore may be i3, i7, AMD (@office)

-> Win7 dual boot Linux Ubuntu(maybe old version), quartus 18.1 on win7

-> laptop win10 refuse revert back to win7, (why windows 10 why???) we don't like at all, we work not have our time wasted when at field.... this can be next test bed Linux Ubuntu 18