Ragnarok Tactics

[odakunz]

I have this weird thing where when a character is selected in the battle field, there will be options to move/atk/sit/etc, then when I choose move, usually the screen will show blue square path to move to, but sometimes there are no path showed and no reaction for any key pressed, literally get stuck. But the screen doesn't seems to freeze though, because the lower left character queue icon still blinks as if the game still active.

I have tried different ISOs and different builds, it solve the problem temporally through that battle field, but sometimes it happen again in another battle.

Anyone have this kind of bug ? Is it considered game related bug or emu bug ?

Update:
I think I found the reason it stuck, looking into the ppsspp log, something about out of memory and thread does not exist

06:48:910 AT3Thread0 E[HLE]: Util\BlockAllocator.cpp:131 Block Allocator failed to allocate 65536 (00010000) bytes of contiguous memory
06:48:910 AT3Thread0 E[HLE]: HLE\sceKernelThread.cpp:318 Failed to allocate stack for thread
06:48:910 AT3Thread0 E[HLE]: HLE\sceKernelThread.cpp:1883 sceKernelCreateThread(name=add_st_data): out of memory, 00010000 stack requested
06:48:910 AT3Thread0 E[HLE]: c:\buildagent\work\acf56f986e98e7c9\core\hle\sceKernel.h:446 Kernel: Bad object handle -2147352176 (80020190)
06:48:910 AT3Thread0 E[HLE]: HLE\sceKernelThread.cpp:1919 80020198=sceKernelStartThread(thread=-2147352176, argSize=16, argPtr=08bfd3b4): thread does not exist!
06:48:925 user_main E[HLE]: c:\buildagent\work\acf56f986e98e7c9\core\hle\sceKernel.h:446 Kernel: Bad object handle -2147352176 (80020190)
06:48:925 user_main E[HLE]: HLE\sceKernelThread.cpp:1281 sceKernelReferThreadRunStatus Error 80020198
06:49:330 user_main E[CPU]: Mips\MIPSInt.cpp:194 BREAK!

It looks like ppsspp try to allocate 10000 bytes for a thread, but it fail because of out of memory, so it break !
Any idea how to solve this ?