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Question: why PDEtools:-Solve gives exception but not solve?

Question:why PDEtools:-Solve gives exception but not solve?

nm 7930 Maple 2022
solve pdetools
August 05 2022
2

Found case where PDEtools:-Solve gives exception but not solve.

Is this known issue?

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interface(version);

`Standard Worksheet Interface, Maple 2022.1, Windows 10, May 26 2022 Build ID 1619613`

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restart;
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result:=1/2*(Dirac(1,-t+4+k)+Dirac(1,t-4+k)-Dirac(1,-t+4+k)*cos(-t+4+k)+2*Dirac(-t+4+k)*sin(-t+4+k)+2*sin(t-4+k)*Dirac(t-4+k)-Dirac(1,t-4+k)*cos(t-4+k))/k;
result:=simplify(result) ;
PDEtools:-Solve(result = 0,t) assuming t::real

(1/2)*(Dirac(1, -t+4+k)+Dirac(1, t-4+k)-Dirac(1, -t+4+k)*cos(-t+4+k)+2*Dirac(-t+4+k)*sin(-t+4+k)+2*sin(t-4+k)*Dirac(t-4+k)-Dirac(1, t-4+k)*cos(t-4+k))/k

(1/2)*(Dirac(1, -t+4+k)+Dirac(1, t-4+k)-Dirac(1, -t+4+k)*cos(-t+4+k)+2*Dirac(-t+4+k)*sin(-t+4+k)+2*sin(t-4+k)*Dirac(t-4+k)-Dirac(1, t-4+k)*cos(t-4+k))/k

Error, (in assuming) when calling 'RootOf'. Received: 'expression independent of, _Z, RootOf'

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solve(result = 0,t) assuming t::real
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Download exception_from_Solve_august_8_2022.mw
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